Aliases & Classifications for Astigmatism

MalaCards integrated aliases for Astigmatism:

Name: Astigmatism 56 12 74 29 54 6 43 15 71 32


External Ids:

Disease Ontology 12 DOID:11782
OMIM 56 603047
ICD9CM 34 367.2 367.20
MeSH 43 D001251
SNOMED-CT 67 82649003
ICD10 32 H52.2 H52.20
MedGen 41 C0004106
UMLS 71 C0004106

Summaries for Astigmatism

OMIM : 56 Astigmatism (from the Greek 'a' meaning absence and 'stigma' meaning point) is a condition in which the parallel rays of light entering the eye through the refractive media are not focused on a single point. Both corneal and noncorneal factors contribute to refractive astigmatism. Corneal astigmatism is mainly the result of an aspheric anterior surface of the cornea, which can be measured readily by means of a keratometer; in a small fraction of cases (approximately 1 in 10) the effect is neutralized by the back surface. The curvature of the back surface of the cornea is not considered in most studies, because it is more difficult to measure; moreover, in the case of severe corneal astigmatism, there is evidence that both surfaces have the same configuration. Noncorneal factors are errors in the curvature of the 2 surfaces of the crystalline lens, irregularity in the refractive index of the lens, and an eccentric lens position. Since the cornea is the dominant component of the eye's refracting system, a highly astigmatic cornea is likely to result in a similarly astigmatic ocular refraction (summary by Clementi et al., 1998). (603047)

MalaCards based summary : Astigmatism is related to irregular astigmatism and aland island eye disease, and has symptoms including blurred vision and aniseikonia. An important gene associated with Astigmatism is ANKRD11 (Ankyrin Repeat Domain 11). The drugs Atropine and Tropicamide have been mentioned in the context of this disorder. Affiliated tissues include eye, endothelial and testes.

Disease Ontology : 12 A refractive error characterized by the optics of the eye to focus a point object into a sharp focused image on the retina, has symptom blurred vision.

Wikipedia : 74 Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina.... more...

Related Diseases for Astigmatism

Diseases related to Astigmatism via text searches within MalaCards or GeneCards Suite gene sharing:

(showing 194, show less)
# Related Disease Score Top Affiliating Genes
1 irregular astigmatism 34.5 KRT3 KRT12
2 aland island eye disease 33.1 GPR143 CACNA1F
3 refractive error 33.1 TOX NRXN1 CASC15
4 corneal dystrophy, meesmann, 1 31.9 KRT3 KRT12
5 pathologic nystagmus 31.2 GPR143 FRMD7 CACNA1F
6 corneal degeneration 30.8 KRT3 KRT12
7 recurrent corneal erosion 30.8 KRT3 KRT12
8 pseudopterygium 30.6 KRT3 KRT12
9 aniridia 1 30.5 KRT3 KRT12 FRMD7
10 congenital nystagmus 30.3 GPR143 FRMD7
11 regular astigmatism 12.5
12 rare hyperopia and astigmatism 12.2
13 keratoconus 11.7
14 isolated ectopia lentis 11.6
15 amblyopia 11.6
16 ametropic amblyopia 11.4
17 keratoconus 8 11.4
18 keratoconus 1 11.4
19 megalocornea 11.4
20 retinitis pigmentosa 11.4
21 cataract 11.2
22 microcephaly with or without chorioretinopathy, lymphedema, or mental retardation 11.2
23 lymphedema-distichiasis syndrome 11.2
24 ectopia lentis et pupillae 11.2
25 nystagmus 6, congenital, x-linked 11.2
26 nystagmus 1, congenital, x-linked 11.2
27 myopia 11.2
28 myhre syndrome 11.1
29 lacrimal duct defect 11.1
30 nystagmus 2, congenital, autosomal dominant 11.1
31 nystagmus 4, congenital, autosomal dominant 11.1
32 keratoconus posticus circumscriptus 11.1
33 macrocephaly/megalencephaly syndrome, autosomal recessive 11.1
34 pilodental dysplasia with refractive errors 11.1
35 nystagmus 5, congenital, x-linked 11.1
36 nystagmus 3, congenital, autosomal dominant 11.1
37 keratoconus 5 11.1
38 nystagmus 7, congenital, autosomal dominant 11.1
39 familial primary hypomagnesemia with hypercalciuria and nephrocalcinosis 11.1
40 ichthyosis follicularis atrichia photophobia syndrome 11.1
41 ocular motor apraxia 10.8
42 suppression amblyopia 10.8
43 anisometropia 10.7
44 strabismus 10.6
45 mechanical strabismus 10.6
46 x-linked infantile nystagmus 10.6 GPR143 FRMD7
47 corneal dystrophy, lisch epithelial 10.6 KRT3 KRT12
48 keratitis, hereditary 10.5
49 limbal stem cell deficiency 10.5 KRT3 KRT12
50 cycloplegia 10.5
51 corneal dystrophy, reis-bucklers type 10.5 KRT3 KRT12
52 corneal dystrophy, thiel-behnke type 10.5 KRT3 KRT12
53 granular corneal dystrophy 10.5 KRT3 KRT12
54 corneal disease 10.5
55 ocular albinism 10.5 GPR143 FRMD7 CACNA1F
56 epithelial and subepithelial dystrophy 10.5 KRT3 KRT12
57 retinal detachment 10.4
58 macular dystrophy, corneal 10.4 KRT3 KRT12
59 presbyopia 10.4
60 corneal ectasia 10.4
61 keratopathy 10.4
62 corneal dystrophy, gelatinous drop-like 10.4 KRT3 KRT12
63 tracheal stenosis 10.4 PLCL1 ADAMTSL4
64 eye disease 10.4
65 intraocular pressure quantitative trait locus 10.4
66 corneal edema 10.4
67 bullous keratopathy 10.4
68 endophthalmitis 10.4
69 schnyder corneal dystrophy 10.3 KRT3 KRT12
70 fuchs' endothelial dystrophy 10.3
71 senile cataract 10.3
72 alternating exotropia 10.3
73 exotropia 10.3
74 hemangioma 10.3
75 stromal dystrophy 10.3 KRT3 KRT12
76 corneal dystrophy 10.3
77 pellucid marginal degeneration 10.3
78 farsightedness 10.3
79 corneal dystrophy, fuchs endothelial, 1 10.2
80 macular degeneration, age-related, 1 10.2
81 monocular esotropia 10.2
82 esotropia 10.2
83 epiblepharon 10.2
84 exudative vitreoretinopathy 1 10.2
85 macular retinal edema 10.2
86 meibomian cyst 10.2
87 47,xyy 10.2
88 ocular dominance 10.2
89 microvascular complications of diabetes 5 10.2
90 albinism 10.2
91 coloboma of macula 10.1
92 glaucoma, primary open angle 10.1
93 marfan syndrome 10.1
94 yemenite deaf-blind hypopigmentation syndrome 10.1
95 hydrops, lactic acidosis, and sideroblastic anemia 10.1
96 aniseikonia 10.1
97 ptosis 10.1
98 hypopyon 10.1
99 open-angle glaucoma 10.1
100 lagophthalmos 10.1
101 corneal ulcer 10.1
102 iridocyclitis 10.1
103 48,xyyy 10.1
104 corneal dystrophy, posterior polymorphous, 1 10.0
105 down syndrome 10.0
106 aging 10.0
107 human immunodeficiency virus type 1 10.0
108 congenital ptosis 10.0
109 lens subluxation 10.0
110 mature cataract 10.0
111 capillary hemangioma 10.0
112 eyelid disease 10.0
113 herpes simplex 10.0
114 scotoma 10.0
115 keratoconjunctivitis 10.0
116 exophthalmos 10.0
117 fuchs' heterochromic uveitis 10.0
118 ring chromosome 2 10.0
119 deafness, unilateral 9.9
120 hand skill, relative 9.9
121 hemifacial spasm, familial 9.9
122 renal cell carcinoma, nonpapillary 9.9
123 ige responsiveness, atopic 9.9
124 lipomatosis, multiple 9.9
125 neurofibromatosis, type iv, of riccardi 9.9
126 optic nerve hypoplasia, bilateral 9.9
127 pemphigus vulgaris, familial 9.9
128 septooptic dysplasia 9.9
129 neural tube defects 9.9
130 albinism, oculocutaneous, type ii 9.9
131 alkaptonuria 9.9
132 multinucleated neurons, anhydramnios, renal dysplasia, cerebellar hypoplasia, and hydranencephaly 9.9
133 short syndrome 9.9
134 myopia 13, x-linked 9.9
135 branchiootic syndrome 1 9.9
136 exudative vitreoretinopathy 3 9.9
137 myopia 5, autosomal dominant 9.9
138 keratoconus 2 9.9
139 myopia 12, autosomal dominant 9.9
140 myopia 16, autosomal dominant 9.9
141 myopia 15, autosomal dominant 9.9
142 keratoconus 6 9.9
143 interstitial nephritis, karyomegalic 9.9
144 helix syndrome 9.9
145 exudative vitreoretinopathy 9.9
146 aphasia 9.9
147 cornea plana 9.9
148 muscular disease 9.9
149 dry eye syndrome 9.9
150 neuroretinitis 9.9
151 pleomorphic lipoma 9.9
152 microphthalmia 9.9
153 allergic conjunctivitis 9.9
154 corneal abscess 9.9
155 synostosis 9.9
156 goiter 9.9
157 entropion 9.9
158 posterior uveitis 9.9
159 leiomyoma 9.9
160 shipyard eye 9.9
161 uveitis 9.9
162 senile ectropion 9.9
163 color blindness 9.9
164 staphyloma posticum 9.9
165 primary angle-closure glaucoma 9.9
166 ochronosis 9.9
167 lymphangioma 9.9
168 ectropion 9.9
169 dysostosis 9.9
170 neuroma 9.9
171 craniosynostosis 9.9
172 retinitis 9.9
173 arthropathy 9.9
174 cranial nerve palsy 9.9
175 myopathy 9.9
176 juvenile xanthogranuloma 9.9
177 dyslexia 9.9
178 blepharospasm 9.9
179 retinal disease 9.9
180 conjunctivitis 9.9
181 retinal degeneration 9.9
182 pemphigus 9.9
183 hypertropia 9.9
184 accommodative esotropia 9.9
185 steroid-induced glaucoma 9.9
186 orbital lymphangioma 9.9
187 plagiocephaly 9.9
188 ring chromosome 3 9.9
189 hemifacial spasm 9.9
190 atopic keratoconjunctivitis 9.9
191 rapidly involuting congenital hemangioma 9.9
192 rare lymphatic malformation 9.9
193 acute sensory ataxic neuropathy 9.9
194 vitreoretinopathy 9.9

Graphical network of the top 20 diseases related to Astigmatism:

Diseases related to Astigmatism

Symptoms & Phenotypes for Astigmatism

Clinical features from OMIM:



12 (showing 1, show less)
  • blurred vision

UMLS symptoms related to Astigmatism:


Drugs & Therapeutics for Astigmatism

Drugs for Astigmatism (from DrugBank, HMDB, Dgidb, PharmGKB, IUPHAR, NovoSeek, BitterDB):

(showing 138, show less)
# Name Status Phase Clinical Trials Cas Number PubChem Id
Atropine Approved, Vet_approved Phase 4 5908-99-6, 51-55-8 174174
Tropicamide Approved, Investigational Phase 4 1508-75-4 5593
Fluorouracil Approved Phase 4 51-21-8 3385
Bevacizumab Approved, Investigational Phase 4 216974-75-3
Ganciclovir Approved, Investigational Phase 4 82410-32-0 3454
Dipivefrin Approved Phase 4 52365-63-6 3105
Dexamethasone Approved, Investigational, Vet_approved Phase 4 50-02-2 5743
Dexamethasone acetate Approved, Investigational, Vet_approved Phase 4 1177-87-3
Methylprednisolone Approved, Vet_approved Phase 4 83-43-2 6741
Prednisolone Approved, Vet_approved Phase 4 50-24-8 5755
Methylprednisolone hemisuccinate Approved Phase 4 2921-57-5
12 Prednisolone acetate Approved, Vet_approved Phase 4 52-21-1
Prednisolone phosphate Approved, Vet_approved Phase 4 302-25-0
Prednisolone hemisuccinate Experimental Phase 4 2920-86-7
15 Anti-Arrhythmia Agents Phase 4
16 Anti-Asthmatic Agents Phase 4
17 Adjuvants, Anesthesia Phase 4
18 Muscarinic Antagonists Phase 4
19 Bronchodilator Agents Phase 4
20 Cholinergic Agents Phase 4
21 Mydriatics Phase 4
22 Parasympatholytics Phase 4
23 Cholinergic Antagonists Phase 4
24 Angiogenesis Inhibitors Phase 4
25 Antineoplastic Agents, Immunological Phase 4
26 Immunosuppressive Agents Phase 4
27 Antimetabolites Phase 4
28 Anti-Infective Agents Phase 4
29 Antiviral Agents Phase 4
30 Ganciclovir triphosphate Phase 4
31 Adrenergic Agonists Phase 4
32 Anti-Bacterial Agents Phase 4
33 Antibiotics, Antitubercular Phase 4
34 Protective Agents Phase 4
35 Gastrointestinal Agents Phase 4
36 HIV Protease Inhibitors Phase 4
protease inhibitors Phase 4
38 Methylprednisolone Acetate Phase 4
39 Anti-Inflammatory Agents Phase 4
40 BB 1101 Phase 4
41 Hormone Antagonists Phase 4
42 Neuroprotective Agents Phase 4
43 Fluoroquinolones Phase 4
44 Antineoplastic Agents, Hormonal Phase 4
45 glucocorticoids Phase 4
46 Hormones Phase 4
47 Antiemetics Phase 4
Lidocaine Approved, Vet_approved Phase 2, Phase 3 137-58-6 3676
Acetaminophen Approved Phase 3 103-90-2 1983
Guaifenesin Approved, Investigational, Vet_approved Phase 3 93-14-1 3516
Codeine Approved, Illicit Phase 3 76-57-3 5284371
Folic acid Approved, Nutraceutical, Vet_approved Phase 3 59-30-3 6037
53 Mitomycins Phase 3
54 Vitamins Phase 3
55 Trace Elements Phase 3
56 Micronutrients Phase 3
57 Nutrients Phase 3
58 Vitamin B Complex Phase 3
59 Vitamin B9 Phase 3
60 Dermatologic Agents Phase 3
61 Folate Phase 3
62 Photosensitizing Agents Phase 3
63 Sodium Channel Blockers Phase 2, Phase 3
64 Diuretics, Potassium Sparing Phase 2, Phase 3
65 Polymethyl Methacrylate Phase 3
66 Vasodilator Agents Phase 3
67 Respiratory System Agents Phase 3
68 Central Nervous System Depressants Phase 3
69 Antipyretics Phase 3
70 Narcotics Phase 3
71 Analgesics, Non-Narcotic Phase 3
72 Analgesics, Opioid Phase 3
73 Antitussive Agents Phase 3
74 Chlorpheniramine, phenylpropanolamine drug combination Phase 3
75 Analgesics Phase 3
Ethanol Approved Phase 2 64-17-5 702
Povidone Approved Phase 2 9003-39-8
Iodine Approved, Investigational Phase 2 7553-56-2 807
Tetracaine Approved, Vet_approved Phase 2 94-24-6 5411
Povidone-iodine Approved Phase 2 25655-41-8
81 Anesthetics, Local Phase 2
82 cadexomer iodine Phase 2
83 Plasma Substitutes Phase 1, Phase 2
84 Anticoagulants Phase 1, Phase 2
85 Blood Substitutes Phase 1, Phase 2
86 Alkylating Agents Phase 1
Coal tar Approved 8007-45-2
Salicylic acid Approved, Investigational, Vet_approved 69-72-7 338
Miconazole Approved, Investigational, Vet_approved 22916-47-8 4189
Epinephrine Approved, Vet_approved 51-43-4 5816
Racepinephrine Approved 329-65-7 838
Edetic Acid Approved, Vet_approved 60-00-4, 62-33-9 6049
Pentetic acid Approved 67-43-6
Hydrogen peroxide Approved, Vet_approved 7722-84-1 784
Flavin Mononucleotide Approved, Investigational 146-17-8 643976
Propranolol Approved, Investigational 525-66-6 4946
Levofloxacin Approved, Investigational 100986-85-4 149096
Tobramycin Approved, Investigational 32986-56-4 5496 36294
Ofloxacin Approved 82419-36-1 4583
Midazolam Approved, Illicit 59467-70-8 4192
Metronidazole Approved 443-48-1 4173
Hyaluronic acid Approved, Vet_approved 9004-61-9 53477741
Dopamine Approved 51-61-6, 62-31-7 681
Methamphetamine Approved, Illicit 537-46-2 10836
Riboflavin Approved, Investigational, Nutraceutical, Vet_approved 83-88-5 493570
Imidacloprid Vet_approved 105827-78-9 86418
107 Proxymetacaine
108 Pharmaceutical Solutions
109 Dextrans
110 Vitamin B2
111 Ophthalmic Solutions
112 Antifungal Agents
113 Keratolytic Agents
114 Contact Lens Solutions
115 Calamus
s 1 (combination)
117 Epinephryl borate
118 Immunologic Factors
119 Renal Agents
120 Tobramycin, Dexamethasone Drug Combination
121 Cytochrome P-450 Enzyme Inhibitors
122 Viscosupplements
123 Topoisomerase Inhibitors
124 Anti-Infective Agents, Urinary
125 Adjuvants, Immunologic
126 Cytochrome P-450 CYP1A2 Inhibitors
127 Anti-Infective Agents, Local
128 Tea
129 Tetrahydrozoline
130 polysaccharide-K
131 Anesthetics
132 Neurotransmitter Agents
133 Adrenergic Agents
134 Autonomic Agents
135 Sympathomimetics
136 Dopamine Uptake Inhibitors
137 Dopamine Agents
138 Central Nervous System Stimulants

Interventional clinical trials:

(showing 383, show less)
# Name Status NCT ID Phase Drugs
1 Effect of Posterior Corneal Toricity on Refractive Outcome of Pseudophakia Unknown status NCT01554761 Phase 4
2 Clinical Evaluation of Toric Intraocular Lens Made by Aurolab Unknown status NCT01396616 Phase 4
3 A Prospective, Randomized, Multi Center Clinical Comparison Of Fellow Eyes Undergoing Lasik Using The Amo/Visx Customvue™ , The Bausch And Lomb Zyoptix And Planoscan And The Wavelight Allegretto Wave™ Wavefront Guided And Wavefront Optimized Excimer Laser Systems Unknown status NCT00770094 Phase 4
4 PHASE IV STUDY # 1162. Prospective Investigation of SUPRACOR Visual Outcomes of Presbyopic Hyperopic Patients With and Without Astigmatism Unknown status NCT01628146 Phase 4
5 Comparison of Next Generation Laser Techniques of Myopia Correction: iDesign vs. SMILE Unknown status NCT03001401 Phase 4
6 Pilot Study of Prevention Myopia in Children With Low Concentration of Atropine Unknown status NCT00541177 Phase 4 atropine;tropicamide
7 Management of Recurrent Pterygium to Prevent Visual Impairment Unknown status NCT02530801 Phase 4 Bevacizumab;5 fluorouracil
8 Use of Toric Intraocular Lens to Neutralize Keratometric Astigmatism Completed NCT00925886 Phase 4
9 Monocular Study to Evaluate the Safety and Effectiveness of the Akreos™ Toric IOL When Used to Correct Primary Aphakia With the Reduction of Astigmatism Completed NCT00825513 Phase 4
10 Comparison of Toric IOL Implantation and Opposite Clear Corneal Incision During Cataract Surgery to Correct Corneal Astigmatism Completed NCT01763151 Phase 4
11 A Single-Center Study Comparing the Clinical Performance of Biofinity Toric Versus Air Optix for Astigmatism Over 1 Month of Daily Wear. Completed NCT01965288 Phase 4
12 Intrastromal Corneal Ring Segment Implantation for High Astigmatism on Postkeratoplasty Eyes Completed NCT01018797 Phase 4
13 Phase IV Study_Prospective Evaluation of the Effectiveness of the Femtosecond Laser-assisted Refractive Astigmatic Keratotomy Following the Cataract Surgery. Completed NCT01885780 Phase 4
14 Clinical Performance of Habitual Wearers of Hydrogel Toric Lenses When Refitted With Avaira Toric Silicone Hydrogel Lenses Completed NCT02142361 Phase 4
15 Evaluation of the Acrysof Toric Model SN60T3 Intraocular Lens in Patients With Predicted Residual Corneal Astigmatism Between 0.75 and 1.03 Diopters (D) Completed NCT00732030 Phase 4
16 Randomized Comparison of the Abbott WHITESTAR Signature System With Ellips Tranversal Ultrasound vs. the Alcon Infiniti With the Ozil Torsional Handpiece in Phacoemulsification: A Contralaterally-Controlled Trial Completed NCT01279031 Phase 4
17 A Prospective, Multi Center Clinical Comparison of Fellow Eyes Undergoing Lasik Using the Wavelight Allegretto Wave™ Excimer Laser in One Eye and the Amo/Visx Customvue™ or the Ladarvision 4000 Excimer Laser System in the Contralateral Eye Completed NCT00821236 Phase 4
18 A Prospective Study to Evaluate the Safety and Effectiveness of the Supracor Presbyopic Treatment Algorithm for Pseudophakic Eyes Using Lasik Completed NCT01387360 Phase 4
19 Infiltrative Events During Silicone Hydrogel Daily Contact Lens (Daily Wear Corneal Infiltrative Event (DWCIE) Study) Completed NCT00937105 Phase 4
20 Visual Outcomes After Implantation of a New Refractive Toric Multifocal Intraocular Lens Completed NCT01505816 Phase 4
21 A Prospective, Double-masked, Placebo Controlled Comparison of Topical 0.15% Ganciclovir Gel (Zirgan®) Versus 0.3% Hypromellose Gel (Genteal Gel®; Placebo) for the Treatment of Adenovirus Conjunctivitis Completed NCT01533480 Phase 4 Zirgan;genteal gel
22 A Randomised Intra-patient Comparison of Closed Loop and Plate Haptic Toric, Aspheric, Aberration Neutral, Hydrophilic Acrylic Intraocular Lenses in Patients With Bilateral Astigmatism Recruiting NCT02264457 Phase 4
23 A Prospective Eye to Eye Comparison of LASIK Using the Alcon Allegretto Wavefront-Guided Excimer Laser Versus AMO Visx Wavefront-Guided Excimer Laser Active, not recruiting NCT01454843 Phase 4
24 A Prospective, Randomized Comparison of Fellow Eyes Undergoing Wavefront-guided PRK Versus Wavefront-optimized PRK Using the Alcon Allegretto Eye-Q 400 Excimer Laser Active, not recruiting NCT02091934 Phase 4
25 A Prospective Randomized Comparison of the AMO CustomVue to the Alcon Wavelight in Patients Undergoing LASIK Active, not recruiting NCT02565537 Phase 4
26 A Prospective Randomized Eye to Eye Comparison of Fellow Eyes Undergoing Lasik With the IntraLase(TM) FS Versus PRK Active, not recruiting NCT01140594 Phase 4
27 Intracanalicular Dexamethasone Insert for Post-Corneal Cross-Linking Inflammation and Pain- The LINK Study Not yet recruiting NCT04168112 Phase 4 Dextenza;Prednisolone Acetate
28 Clinical Evaluation of the Toric BuunyLens TR Intra-ocular Lens Unknown status NCT01659801 Phase 3
29 A Prospective Study To Evaluate The Safety And Effectiveness Of The SUPRACOR Presbyopic Treatment Algorithm For Myopia And Myopic Astigmatism Using LASIK Unknown status NCT01404884 Phase 3
30 Intrastromal Correction of Ametropia by a Femtosecond Laser Unknown status NCT00928122 Phase 3
31 Treatment of Keratoconus Using Collagen Cross-Linking By Means of Topical Riboflavin and UV Light. Unknown status NCT00841386 Phase 2, Phase 3 Riboflavin-5-phosphate;Sham cross-linking
32 The Safety and Effectiveness of Collagen Cross Linking With Riboflavin and Ultraviolet-A Light in Progressive Mild and Moderate Grades of Keratoconus. Unknown status NCT00815256 Phase 3
33 A Study Evaluating the Safety and Efficacy of the KXL System With vibeX Rapid (Riboflavin Ophthalmic Solution) for Corneal Collagen Cross-Linking in Eyes Having Keratoconus and Post LASIK Ectasia Unknown status NCT02638376 Phase 3
34 Comparison of Cross-cylinder and Conventional PRK for Laser Correction of Astigmatism: A Randomized Clinical Trial. Completed NCT00663923 Phase 3
35 A Prospective Multicenter, Study to Evaluate the Safety and Effectiveness of the Presbyopia Algorithm for Hyperopia and Hyperopic Astigmatism Using LASIK Completed NCT00910403 Phase 3
36 The Berkeley Orthokeratology Study Completed NCT00000123 Phase 3
37 A Prospective Study of Femtosecond Laser Intracorneal Lensectomi in Treatment of Moderate to High Myopia Completed NCT01673503 Phase 3
38 Effects of Vertical Prism on the Symptoms of Dizziness, Headache and Anxiety as Caused by Vertical Heterophoria: A Randomized, Double-blinded, Placebo-controlled, Cross-over Study Completed NCT00785135 Phase 3
39 A Randomized Study of Codeine Plus Paracetamol Versus Placebo for PRK Post-operative Pain Completed NCT02625753 Phase 3 Codeine;paracetamol;placebo
40 Randomized Study of Corneal Collagen Cross-Linking With the UV-X System for the Treatment of Keratectasia in Eyes With Intacs Compared to Eyes Without Intacs Enrolling by invitation NCT01081561 Phase 2, Phase 3 Riboflavin
41 Topography Guided Excimer Laser Surface Ablation in Combination With Corneal Cross-linking (CCL) in Patients With Progressive Ectatic Corneal Disorders. Terminated NCT01682993 Phase 3
42 Myoring Versus Keraring Implantation for Keratoconus Unknown status NCT01869517 Phase 2
43 A Multi-Center Prospective Study to Evaluate the Safety and Effectiveness of Arcuate Incisions Performed With the IntraLase iFS Femtosecond Laser System Completed NCT01348854 Phase 2
44 Comparative Evaluation of Corneal Staining With Balafilcon A Lenses and Two Multi-Purpose Solutions Completed NCT01024855 Phase 1, Phase 2
45 Phase 1 Study of Ocular Aberrations and Visual Performance of Eyes Implanted With Three Multifocal Intra-ocular Lenses Completed NCT00876707 Phase 1, Phase 2
46 Is Non-cycloplegic Photorefraction Applicable for Screening Refractive Risk Factors of Amblyopia? Completed NCT01308307 Phase 2
47 Horizontal Rectus Tenotomy in the Treatment of Congenital Nystagmus Completed NCT00001866 Phase 2
48 Role of Pupil Centroid Shift Compensation on Lower and Higher Order Aberrations During Photorefractive Keratectomy: An Eye-to-Eye Study Recruiting NCT03844178 Phase 2 installation of Tetracaine 1%
49 A Multi-Center, Randomized, Controlled Evaluation of the Safety and Efficacy of LASIK With Cross-linking Performed With the KXL System and Photrexa ZD™ (Riboflavin Ophthalmic Solution) Compared to LASIK Alone for Hyperopia and Hyperopic Astigmatism Terminated NCT01893359 Phase 1, Phase 2 riboflavin ophthalmic solution, 0% dextran
50 Enhancement of Emmetropization in Hyperopic Infants Terminated NCT00574717 Phase 1, Phase 2
51 A Randomized, Double-Blind, Placebo-Controlled Study to Determine the Effect of Azasite on Corneal Surface Irregularity in Subjects With Meibomian Gland Dysfunction Withdrawn NCT01797107 Phase 2 Azasite
52 Study on the Effect of Mitomycin C 0.02% on the Corneal Endothelial After Photorefractive Keratectomy in Moderate Myopia Unknown status NCT00999973 Phase 1 Mitomycin C 0.02%;Placebo
53 Effect of Pterygium Excision on IOL Power Calculation: Concurrent Cataract and Pterygium Unknown status NCT00563667
54 Randomized, Prospective Comparison of the Outcome of TICL and Q Value Customized LASIK for the Correction of Myopia With Astigmatism Unknown status NCT01088568
55 Limbal Relaxing Incisions Versus Toric Intraocular Lens for Keratometric Astigmatism <2.5 Diopters in Patients Undergoing Cataract Surgery and Intraocular Lens Implantation. Unknown status NCT02067429
56 Einfluss Der Trabekulektomie Und Der Kombinierten Phako-Trabekulektomie Auf Den Kornealen Astigmatismus Unknown status NCT02945202
57 A 180 Day, Multicenter Study to Evaluate the Clinical Performance of SynergEyes A2 Hybrid Contact Lenses for Daily Wear Use in the Correction of Refractive Error With or Without Astigmatism in Non-diseased Eyes Unknown status NCT01058629
58 Diurnal Changes of the Cornea - a Pilot Study Unknown status NCT02155556
59 Prospective Evaluation of the Long-term (18 Months) Effectiveness of the Femtosecond Laser-assisted Arcuate Incisions Following Cataract Surgery Unknown status NCT02164994
60 An Investigator-Initiated Trials on the Efficacy and Stability of AT TORBI 709M 4-haptic Toric IOL in Cataract Surgery Unknown status NCT02618018
61 Manually Performed Limbal Relaxing Incisions vs Femtosecond Laser-guided Astigmatic Keratotomy for Correction of Corneal Astigmatism After Phacoemulsification Unknown status NCT03264534
62 Prescription of Full Optical Correction in Refractive Errors to Treat Esotropia in Children up to 3 Years Old Unknown status NCT02404324
63 Astigmatic Corneal Changes Secondary to Eyelid Surgery Unknown status NCT01968174
64 Topography-Guided Customized PRK (Photorefractive Keratectomy) Versus Q-value Adjusted PRK in Correction of Myopia With or Without Astigmatism Unknown status NCT03291873
65 Rotational Stability of V4C Toric Implantable Contact Lenses After On Axis Implantation Measured With OPD Scan 3 Unknown status NCT03391544
66 Study to Evaluate the Safety and Efficacy of HI-BRITE Large Diameter Rigid Gas Permeable Contact Lens (Hexafocon b) Test When Worn on a Daily Wear Basis in the Correction of Myopia/Hyperopia/Astigmatism/Presbyopia/ and Irregular Cornea. Unknown status NCT02812316
67 Examination of Rayner T-flex Toric Intra-Ocular Lens for Spherical and Astigmatic Correction, and Rotational Stability Unknown status NCT02393313
68 Rotational Stability After Nanoflex Collamer Toric Intraocular Lens Implantation in Astigmatic Patients Undergoing Cataract Surgery Unknown status NCT02412215
69 A Trial of Toric Versus Non-toric Intraocular Lenses in Phacoemulsification Cataract Surgery Unknown status NCT01712503
70 Prospective Evaluation of Limbal Relaxing Incision (LRI) in Conjunction With Phacoemulsification Surgery for Astigmatic Correction in Chinese Eyes Unknown status NCT01122992
71 High-resolution Imaging of Tear Film Thickness in Contact Lenses Wearers With Optical Coherence Tomography (OCT). A Pilot Study Unknown status NCT02713399
72 Surgical Treatment of Concurrent Cataract and Primary Pterygium: A Randomized Control Trial Unknown status NCT00563277
73 Changes of Visual Function, Ocular Surface Structures and Physiology After Long-Termed Contact Lens Wear Unknown status NCT02894489
74 Development of a Validated Chart for Intermediate Vision Assessment Unknown status NCT02279446
75 Intraoperative Performance & Postoperative Outcomes Following Phacoemulsification With 1.8 & 2.2mm Incision: Randomized Clinical Trial Unknown status NCT01385878
76 Visual Performance of Pseudophakic Patient With Different Intraocular Lenses Unknown status NCT01763411
77 Intacs for Keratoconus Unknown status NCT00347230
78 Femtosecond Laser Assisted Epi-keratoplasty Versus Collagen Cross-Linking in Progressive Keratoconus Unknown status NCT02721628
79 Comparison Between Femtosecond Assisted LASIK and Small Incision Lenticule Extraction (SMILE) for Correction of Myopia and Myopic Astigmatism Unknown status NCT02962544
80 The Use of Pentacam in Assessment of Corneal Changes After Pterygium Excision Unknown status NCT03304366
81 The Use of an Anterior Chamber Maintainer as a Sole Fluid Source in Micro Incision Cataract Surgery as Compared to a Standard Phacoemulsification Procedure Unknown status NCT01553760
82 Compare Anterior Chamber Biometry in Healthy and Post-LASIK Pati Unknown status NCT00838734
83 Non-invasive Phototherapeutic Intrastromal Corneal Collagen Crosslinking (PiXL) for Low-grade Myopia Unknown status NCT03197272
84 Prospective Randomized Study Comparing Endothelial Cell Loss Using the Tan EndoGlide With the Endoserter for Insertion of the Donor Graft in Descemets Stripping Endothelial Keratoplasty (DSAEK) Unknown status NCT01791075
85 Association of Type Three Secretion System (T3SS) of Pseudomonas Aeruginosa With Pathogenesis of Contact Lens-Associated Microbial Keratitis (CLMK) Unknown status NCT01925846
86 The Effect of Glaucoma Surgery on Aqueous Dynamics in Patients With Glaucoma or Ocular Hypertension: An Observational Study Unknown status NCT02839590
87 Comparison of Small Incision Lenticule Extraction (SMILE) and VisuMax Femtosecond Laser In Situ Keratomileusis (FemtoLASIK): A Randomized, Non-inferiority Trial Unknown status NCT01216475
88 Corneal Endothelial Cell Loss After Trabeculectomy Versus Combined Trabeculectomy Phakoemulsification and IOL Implantation Unknown status NCT03107000
89 Corneal Astigmatism Measurement Study Completed NCT00818532
90 Assessment of Visual Performance in Patients With Low Levels of Astigmatism Completed NCT00842231
91 Evaluation of Two Daily Disposable Contact Lenses for Wearers With Astigmatism Completed NCT01207466
92 Axis Orientation Comparison of Two Silicone Hydrogel Toric Contact Lenses Completed NCT03392532
93 Clinical Performance of Atypical Contact Lens Powers on Subjects With Astigmatism Completed NCT00697190
94 The Effect of Trabeculectomy on Astigmatism. Completed NCT01711190
95 DAILIES® AquaComfort Plus® Toric - Comparative Assessment of Visual and Mechanical Performance Completed NCT02071771
96 Evaluation Study on Corneal Lens for Vision Correction Completed NCT02053688
97 Comparison Between Toric and Spherical Implantable Collamer Lens Combined With Astigmatic Keratotomy for High Myopic Astigmatism Completed NCT03202485
98 Bilateral Dispensing Clinical Trial of Stenfilcon A Against Etafilcon A for Astigmatism Completed NCT02410824
99 Tomographic Analysis of Anterior, Posterior and Total Corneal Refractive Power Changes After Femtosecond Laser-assisted Keratotomy After Laser Lens Surgery Completed NCT03097302
100 Comparative Clinical Evaluation of Soft Toric Lens Designs Completed NCT01552876
101 Visual Performance Investigation of Two Toric Soft Contact Lenses Completed NCT01858701
102 Comparison of Clinical Outcomes of Toric Intraocular Lens Completed NCT03085901
103 Dispensing Evaluation of New Daily Disposable Toric Soft Contact Lens. Completed NCT01055132
104 A Prospective Study to Evaluate the Safety and Effectiveness of Wavefront-Guided LASIK Correction of Mixed Astigmatic Refractive Errors With the iDESIGN Advanced Wavescan Studio™ System and STAR S4 IR™ Excimer Laser System Completed NCT01675492
105 A Bilateral Dispensing Comparison of Biofinity Toric and Ultra for Astigmatism Completed NCT03519932
106 Clinical Comparison of Two Silicone Hydrogel Toric Lenses in the US Completed NCT01007812
107 A Study to Evaluate the Safety and Effectiveness of the Technols 217z Zyoptix System for Hyperopia Completed NCT00348205
108 Impact of Preoperative Astigmatism on Corneal Biomechanics and Accurate Intraocular Pressure Measurement After Micro-incision Phacoemulsification Completed NCT03162471
109 Bilateral Dispensing Study of MyDay Toric, 1-day Acuvue Moist for Astigmatism, and Dailies Aquacomfort Plus Toric Lenses Completed NCT03134248
110 Compare the Safety and Effectiveness of Two Versions of the Bausch & Lomb Zyoptix™ Tissue Saving Aspheric Algorithm to the Current Zyoptix™ Tissue Saving Algorithm When Used for Myopia and Myopic Astigmatism Lasik Treatment Completed NCT00365677
111 Clinical Evaluation of Two Toric Contact Lenses in Current Non-toric Lens Users Completed NCT01180998
112 Construction of Computerized Intraoperative Keratometer and Experimental Study Completed NCT01636167
113 Evaluating and Improving Functional Driving Vision of Patients With Astigmatism: Phase 3 Completed NCT02950545
114 Surgically Induced Astigmatism of Temporal Versus Nasal Clear Corneal Phacoemulsification Completed NCT00521833
115 Evaluating and Improving Functional Driving Vision of Patients With Astigmatism Completed NCT02624791
116 Customized Toric Intraocular Lens Implantation in Eyes With Cataract and Corneal Astigmatism After Deep Anterior Lamellar Keratoplasty (DALK): a Prospective Study Completed NCT03398109
117 A Prospective Randomized Controlled Multi-Center Clinical Study to Evaluate the Safety and Effectiveness of the Light Adjustable Lens (LAL) in Subjects With Pre-Existing Corneal Astigmatism Completed NCT01496066
118 Performance of Toric Silicone Hydrogel Contact Lenses Following Two Weeks of Daily Wear Completed NCT03578926
119 A Prospective Study to Evaluate the Performance and Acceptability of Advanced Variable Spot Scanning (AVSS) Ablations With the STAR S4 IR® Excimer Laser System Completed NCT01067716
120 A Prospective Study to Evaluate the Performance and Acceptability of the iDesign Advanced WaveScan Study(tm) System Completed NCT01220466
121 A Prospective Single Center Study To Evaluate the Feasibility of Intrastromal Arcuate Keratotomy Performed With the IntraLase iFS™ Femtosecond Laser System Completed NCT01210820
122 Reduction of Corneal Astigmatism With Toric Intraocular Lens Implantation : Early Results in Patients With Congenital Cataract Completed NCT02040129
123 Patient Perception of Visual Distortions Completed NCT02203747
124 Comparison of Senofilcon A Toric Lenses to Balafilcon A Toric Lenses Over Extended Wear Period Completed NCT00762502
125 Daily Disposable Toric Comparative Trial in Europe Completed NCT01070381
126 Customized PRK With Mitomycin Versus Customized Lasik for Myopic Astigmatism Completed NCT00365040
127 Post-Approval Study of the TECNIS® Toric IOL Extended Cylinder Range (ECR), Models ZCT450, ZCT525 and ZCT600 Completed NCT02649842
128 Dispensing Evaluation of Investigational Contact Lenses Completed NCT02625220
129 Efficacy and Cost-effectiveness of Toric Intraocular Lenses in Correcting Astigmatism in Cataract Surgery: a Randomised Clinical Trial Completed NCT01075542
130 A Bilateral Dispensing Comparison of Biofinity Toric and Acuvue Vita for Astigmatism Completed NCT03684928
131 Performance of Toric Silicone Hydrogel Contact Lenses Following One Month of Daily Wear Completed NCT03418064
132 A Prospective Multicenter Clinical Trial To Evaluate the Effectiveness of A Toric Accommodating Posterior Chamber Silicone Intraocular Lens Designed To Provide Near, Intermediate, And Distance Vision And Reduce The Effects Of Preoperative Corneal Astigmatism On Postoperative Refraction Following Cataract Surgery Completed NCT01140477
133 The Clinical Study of Silicone Hydrogel Daily Disposable Stenfilcon A Toric Lens Completed NCT02801006
134 Development and Implementation of a Clinical Test to Investigate the Change in Vision With Soft Toric Contact Lenses During Eye Movements Completed NCT00584831
135 Evaluation of Fit and Visual Acuity of the Cypress Toric Lens in Two Phases: Part A: A Non-Dispensing Comparison to SofLens66® Toric and Acuvue® 2 Completed NCT00584727
136 Evaluation of Fit and Visual Acuity of the Investigational Toric Lens in Two Phases: Part B: A Dispensing Cross-over Comparison to SofLens66 Toric Completed NCT00584220
137 Clinical and Theoretical Evaluation of Factors Affecting Soft Toric Lens Performance: Part 3 Completed NCT00583908
138 Evaluation of the Efficacy of the Allegretto Wave and the Wavefront Optimized Ablation Profile in Non-anterior Astigmatisms Completed NCT01432834
139 Study of Refractive Change Induced by 2.8-mm Corneal Incisions for Cataract Surgery Completed NCT00742950
140 Refraction Determination Analysis Completed NCT01995435
141 Impact of a Corneal Pre-cut on Wound Architecture and Astigmatism in Cataract Surgery - a Pilot Study Completed NCT02155270
142 Toric Eye Strain and Stability Study Completed NCT01857102
143 Performance of Fanfilcon A Toric Lenses After at Least One Month Wearing Enfilcon A Toric Lenses Completed NCT02921412
144 Safety and Effectiveness Evaluation of Toric Intraocular Lens Completed NCT03242486
145 ARES Registration Trial Completed NCT01461811
146 Clinical Comparison of Two Daily Disposable Toric Lenses Completed NCT01362894
147 Non-dispensing Study to Check Prescription Equivalence of Two Daily Disposable Toric Contact Lens Types Completed NCT01120782
148 Initial Evaluation of Photorefractive Keratectomy in U.S. Army Personnel Completed NCT00413673
149 Clinical Evaluation of Two Monthly Replacement Silicone Hydrogel Contact Lenses Completed NCT01629693
150 Prevalence of Corneal Astigmatism Before Glaucoma Surgery in Chinese Patients With Primary Angle-closure Glaucoma Completed NCT03159780
151 A Prospective Multicenter Trial To Evaluate The Safety And Effectiveness Of The MEL 80 Excimer Laser Using LASIK (Laser In Situ Keratomileusis) For The Correction Of Naturally Occuring Mixed Astigmatism Up To 6.0 D Completed NCT00761826
152 Use of the VisuMax™ Femtosecond Laser Lenticule Removal Procedure for the Correction of Myopia Wtih or Without Astigmatism Completed NCT02430428
153 Toric Orthokeratology for Slowing Eye Elongation in Astigmatic Children Completed NCT00978692
154 A Single Centre Study to Address Precision and Refractive Predictability of Femtosecond Laser-assisted Astigmatic Keratotomy Following the Cataract Surgery Completed NCT01752218
155 Comparisons of the Astigmatic Power of Toric Intraocular Lens Using Three Toric Calculators: AcrySof, TECNIS, and iTrace Toric Calculator Completed NCT01978106
156 A Prospective Contralateral Comparison of Corneal Aberrations in Subjects Undergoing Aspheric Lens Implantation With Concomitant LRI and Aspheric Toric IOL Implantation Completed NCT01045733
157 ACRYSOF® Toric NATURAL T9 Intraocular Lens (IOL) Completed NCT00967473
158 Pseudophakic Astigmatic Reduction With Verion-LenSx Arcuate Incisions Completed NCT02763124
159 Visual Outcomes After Bilateral Surgical Cataract Phacoemulsification: AcrySof® ReSTOR IOL Implantation Compared to Monofocal IOL Implantation Completed NCT01290068
160 Toric Contact Lens Performance Study Completed NCT03546647
161 A Clinical Comparison of Two Daily Disposable Soft Contact Lenses Completed NCT03779503
162 Clinical Performance of Toric Hydrogel Contact Lenses Following One Week of Daily Wear Completed NCT02847169
163 Clinical Comfort Evaluation of Two Marketed Spherical Contact Lenses Completed NCT02356692
164 Evaluating Refractive and Visual Outcomes With the Alcon Toric ReSTOR +2.5 and +3.0 Models Completed NCT03856944
165 Comparison of Aspheric Toric & Non-toric Aphakic Intraocular Lenses Completed NCT01268540
166 Evaluation of Epi-lasik in U.S. Army Personnel Completed NCT00413517
167 Evaluation of Conventional Photorefractive Keratectomy (PRK) in U.S. Army Personnel, Substudy of: Initial Evaluation of Excimer Laser Keratorefractive Surgery in U.S. Army Personnel Completed NCT00412568
168 Refitting Somofilcon A Toric Contact Lens Wearers Into Fanfilcon A Toric Lenses for 4-weeks of Wear Completed NCT04050605
169 A Prospective Study to Evaluate the Safety and Effectiveness of Wavefront-guided PRK Correction of Myopic Refractive Errors With the iDesign Advanced Wavescan Studio™ System and the Star S4 IR™ Excimer Laser System Completed NCT02675751
170 Observational Study of Corneal Power, Astigmatism, and Aberration Changes After LASIK Completed NCT01893671
171 Clinical Outcomes of Small-incision Lenticule Extraction (SMILE) Using Vector Planning Method. Completed NCT03947944
172 Comparison of Corneal Epithelial and Stromal Thickness Distributions Between Eyes With Keratoconus and Healthy Eyes With Corneal Astigmatism >2.0 D Completed NCT02023619
173 A Prospective Multicenter Trial To Evaluate The Safety And Effectiveness Of The MEL 80 Excimer Laser Using LASIK (Laser In Situ Keratomileusis) For The Correction Of > -7.00 D to -12.00 D Of Myopia With Up To -6.00 D Of Astigmatism, and Maximum MRSE of ≤ -12.00 D Completed NCT00762541
174 Comparative Evaluation of Contact Lens Centering of DAILIES® AquaComfort Plus® Versus 1-DAY ACUVUE® MOIST® Completed NCT02103309
175 Optical Quality, Threshold Target Identification, and Military Target Task Performance After Advanced Keratorefractive Surgery Completed NCT01097525
176 Post-Approval Study of the Tecnis® Toric IOL, Models ZCT300 and ZCT400 Completed NCT02566083
177 Evaluation of Visual Outcomes, Contrast Sensitivity, Glare, and Induction of High Order Aberrations Following LASIK Surgery Using CustomVue Completed NCT00366769
178 Comparison of INTRALASE® to AMADEUS™ Microkeratome Completed NCT00366574
179 A Study to Evaluate the Product Performance of a Prism-Ballasted Toric Contact Lens When Worn by Currently Adapted Soft Contact Lens Wearers. Completed NCT00658996
180 Silicone Hydrogel Contact Lens Clinical and Comfort Benefits With a Multi-Purpose Disinfecting Solution Completed NCT01809197
181 Corneal Wavefront-Guided PRK With Adjunctive Mitomycin-C for the Treatment of Hyperopia After Radial Keratotomy Completed NCT00917657
182 Clinical Investigation of AcrySof® IQ ReSTOR® Multifocal Toric Intraocular Lens Models SND1T3/ SND1T4/ SND1T5/ SND1T6 Completed NCT01323777
183 Refractive Outcomes Evaluation of the Verion Image Guided System + ORA System With VerifEye Completed NCT02513745
184 Rotation of an Intraocular Lens - HOYA Vivinex iSert P261 Completed NCT03157375
185 Clinical Performance of Habitual Wearers of Avaira Toric (Enfilcon A) When Refitted With Clariti Toric (Somofilcon A) Lenses for 1 Month. Completed NCT02248766
186 Retrospective / Prospective Clinical Study of AcrySof® IQ ReSTOR® +2.5 D Multifocal Toric Intraocular Lenses Completed NCT02176343
187 A Prospective Pilot Clinical Study of the AcrySof® IQ ReSTOR® Multifocal Toric IOL Completed NCT01200511
188 Clinical Evaluation of Invigor Toric 1-Day Contact Lenses Completed NCT04016623
189 Neuartige Kontaktlose Biometrische Messungen Completed NCT00494390
190 Evaluation of Astigmatic Contact Lenses Completed NCT03086447
191 Comparison of Three Corneal Horizontal Marking Techniques Using iTrace™ Completed NCT01972191
192 Multicenter Dispensing Study of Biofinity Toric Made-To-Order Lenses in Extended Power Ranges Completed NCT02193178
193 Feasibility Study of the Vedera KXS for Treatment of Keratoconus Completed NCT01069848
194 Influence of Lens Design on Particulate Exchange in the Post-lens Tear Film Completed NCT03782571
195 Endothelial Cell Loss and Surgically Induced Astigmatism After 2.2 mm Wound Assisted vs 2.4 mm Wound-Directed Clear Corneal Incisions for Intraocular Lens Insertion During Cataract Surgery Completed NCT01250964
196 Clinical Results With the AcrySof Toric Intraocular Lens (IOL) Completed NCT01214863
197 Prospective Study of Lens Performance of a Monthly Replacement Lens at Two Weeks and Four Weeks Completed NCT01293240
198 A Prospective Clinical Study to Evaluate the Effectiveness of Digital Refraction Completed NCT03502863
199 Effect of Head and Gaze Position on Soft Toric Contact Lens Performance Completed NCT01579045
200 VERION Versus Conventional, Manual Ink-marking in Toric IOL Implantation Completed NCT02370953
201 Visual Outcomes of an Extended Depth of Focus (EDOF) Intraocular Lens (IOL) Completed NCT03082599
202 Clinical Investigation of AcrySof® IQ ReSTOR® Multifocal Toric Intraocular Lens Models SND1T3/ SND1T4/ SND1T5/ SND1T6 Completed NCT01424189
203 A Controlled Evaluation of the Safety and Efficacy of Laser In-situ Keratomileusis With Crosslinking (XtraLASIK) Compared to Conventional LASIK (convLASIK) in Patients With High Myopia Completed NCT03913338
204 Post Approval Study of the AcrySof® IQ Toric High Cylinder Power IOL Models SN6AT6-SN6AT9 Completed NCT01601665
205 Evaluation of the Bausch & Lomb PureVision Under Nighttime Driving Conditions Completed NCT00581659
206 Evaluating the Effect of Laser Vision Surgery, Phakic Intraocular Lens Implantation, Cataract Surgery, and Pupil Dilation on the Iris Recognition Scanner Function of Smartphone Completed NCT02939001
207 A Prospective, Global, Multi-Center Study for the Evaluation of Outcomes on Subjects Undergoing Myopic Treatments Using the WaveLight® Refractive Suite Completed NCT01941498
208 A Prospective, Global, Multi-Center Study to Evaluate Longitudinal Flap Accuracy on Subjects Undergoing Myopic Refractive Surgery Using the WaveLight® Refractive Suite Completed NCT01941485
209 Prospective Safety and Effectiveness Study of PRK for Myopia With or Without Astigmatism Using the ALLEGRETTO WAVE® EYE-Q Excimer Laser System Completed NCT01699087
210 Intrastromal Corneal Ring Segment Implantation for Ectasia After Refractive Surgery Completed NCT02008253
211 Bilateral Dispensing Study of Fanfilcon A Toric Versus Enfilcon A Toric Lenses Completed NCT02423109
212 Clinical Validation of Biofinity Toric MTO (Made To Order) Lenses Completed NCT02185105
213 Prospective Comparative Study of the Efficacy, Predictability, Safety and Stability of the STAAR and Alcon Toric Intraocular Lenses Implanted in Asian Eyes During Phacoemulsification Surgery Completed NCT01121861
214 Analysis of Visual Outcomes, Contrast Sensitivity, Glare, Induction of High Order Aberrations and Wavefront Technology, Following LASIK Surgery Completed NCT00366743
215 Impact of Incision Size and Architecture on Wound Stability and Astigmatism in Cataract Surgery: an Exploratory Study Completed NCT01778998
216 Comparison of Two Toric IOL´s With Different Haptic Design: Optical Quality After 1 Year Completed NCT03371576
217 Visual and Optics Impact of Refractive Surgery Completed NCT02889588
218 Comparative In-Vivo Wetting Characteristics of Silicone Hydrogel Materials With Selected Lens Care Systems Completed NCT01699750
219 Hyperopic LASIK With Concurrent Prophylactic High-fluence Cross-linking Versus Standard LASIK Outcomes Completed NCT03224013
220 A Prospective, Randomized, Multicenter Trial To Evaluate The Safety And Effectiveness Of The MEL 80 Excimer Laser Using LASIK (Laser In Situ Keratomileusis) For The Correction Of ≤ +6.0 D Of Hyperopia With Or Without Astigmatism Of +0.50 D To +3.50 D And MRSE ≤ +6.50 D Completed NCT00762281
221 Evaluation of Conventional Collagen Crosslinking in Young Keratoconus. Completed NCT02008175
222 Postmarket Study of ORA With VerifEye+ and Barrett Toric Calculator Used for the Implantation of AcrySof Toric Completed NCT03579433
223 Evaluation of the Rotational Stability of The AcrySof Toric Intraocular Lens in the Capsular Bag in High Myopic Subjects Completed NCT01351233
224 A Randomized, Subject-Masked Comparison of Visual Function After Bilateral Implantation of Presbyopia-Correcting IOLs Completed NCT01257217
225 Evaluating the Need for Pseudophakic Intraoperative Abberrometry in Toric IOL Implantation Completed NCT03819842
226 Efficiency, Predictability and Security of the Trans-epithelial Photorefractive Keratectomy (Trans-PRK) for Low and Medium Myopia and Astigmatism: Retrospective Study About 118 Eyes Completed NCT02893592
227 On-Eye Evaluation of Contact Lens Axis Location Completed NCT02100410
228 Comparison of Femtosecond Laser-Assisted and Traditional Keratoplasty for Keratoconus Completed NCT00802776
229 On-Eye Evaluation of Contact Lens Rotation Marks Completed NCT02055404
230 Clinical Evaluation of CATS Tonometer Prism Completed NCT02989909
231 A Prospective Evaluation of Contrast Sensitivity and Disability Glare in Refractive Surgery, a Sub-Study of: Initial Evaluation of Excimer Laser Keratorefractive Surgery in U.S. Army Personnel (WU # 2335-99) Completed NCT00413868
232 The Longitudinal Evaluation of Silicone Hydrogel (LASH) Contact Lens Study Completed NCT00727402
233 Subjective Comfort With Multipurpose Care Solutions in Soft Contact Lens Wearers Completed NCT01211535
234 Familial Analysis of Keratoconus Risk Completed NCT02812563
235 Rotational Stability of a Single-piece Toric Acrylic Intraocular Lens: a Pilot Study Completed NCT02155959
236 Low Concentrations of Atropine for Controlling Myopia Progression in School Children Completed NCT02130167 Atropine
237 Astigmatic Vector Analysis of Posterior Corneal Surface - a Comparison Among Healthy, Forme Fruste and Overt Keratoconus Corneas Completed NCT02698709
238 A Prospective Randomized Comparison of Fellow Eyes Undergoing LASIK With the Intralase FS 60 Versus the Intralase IFS Completed NCT01365728
239 Patient-Reported Outcomes With LASIK: PROWL-2 Completed NCT01655420
240 Corneal Wavefront Guided Versus Aberration Free Transepithelial Photorefractive Keratectomy in Myopic Patients With High Pre-existing Corneal Higher Order Aberrations Completed NCT03786861
241 Bilateral Refractive Amblyopia Treatment Study Completed NCT00305955
242 Repeatability and Reliability of Galilei Corneal Topographer Measurements in Keratoconus Completed NCT03511495
243 First-Sight Refractive Error Correction in the Developing World Completed NCT01598818
244 A Novel Congenital Cataract Category System Based on Lens Opacity Positions and Their Relevant Anterior Segment Characteristics Completed NCT02793869
245 Visual Outcomes After Implantation of a Segmental Refractive Multifocal Intraocular Lens Following Cataract Surgery Completed NCT03452969
246 Objective Verification of Physiologic Changes During Accommodation Under Binocular, Monocular, and Pinhole Conditions Completed NCT03557346
247 Femtosecond Laser-Assisted Keratoplasty Completed NCT01695811
248 Long-term Outcomes After Laser in Situ Keratomileusis (LASIK): Mechanical Microkeratome vs Femtosecond Laser Completed NCT01695642
249 Visual Performance of Multifocal Intraocular Lenses Following Removal of the Crystalline Lens Completed NCT03223857
250 Observational Study of Keratoconus and Post-keratoplasty Eyes Completed NCT02109848
251 LASIK Flap Thickness and Visual Outcomes Using the WaveLight FS200 Femtosecond Laser: 3 Months Follow-up of Initial US Clinical Series Completed NCT02060461
252 A Prospective Study to Evaluate the Feasibility of a New Treatment Algorithm for Wavefront-Guided Lasik Correction of Myopic Refractive Errors Completed NCT01988415
253 Epi Off Versus Epi on Corneal Collagen Cross-linking in Keratoconus Patients: a Comparative Study Throught 2 Years Follow-up Completed NCT03598634
254 Clinical Evaluation of the Safety and Efficacy of FID 120947A Compared to a Marketed Lens Care Solution in Gas Permeable Contact Lens Wearers Completed NCT01912781
255 Clinical Evaluation of the Safety and Efficacy of FID 120947A Compared to a Marketed Lens Care Solution Completed NCT01912768
256 Femtosecond Laser-assisted Anterior Lamellar Keratoplasty Completed NCT02301598
257 Comparison of Corneal Stromal Tissue Consumption Values Estimated When Programming the Intervention Versus the Values Measured by Pre and Postoperative Topography Completed NCT02519673
258 Contact Lens in Pediatrics (CLIP) in an Asian Population Study Completed NCT00473304
259 Comparison of Anwar and Melles Techniques in Deep Anterior Lamellar Keratoplasty (DALK) for Keratoconus Patients Completed NCT00850148
260 Visual Performance of New Apodized Diffractive Multifocal IOL With Addition of Plus Three Completed NCT01027533
261 Difference in Grades of Epiblepharon According to Positional Changes and General Anesthesia Completed NCT01650688
262 Investigation of the Effect of Short-term Orthokeratology With Increased Compression Factor on Ocular Parameters Completed NCT02643875
263 Evaluation of the Acrysof Toric SN60T3 Intraocular Lens in Patients With Predicted Residual Corneal Astigmatism Between 0.75 and 1.00 D. Completed NCT00542581
264 Prospective Study of Substantial Equivalence of Rigid Gas Permeable HDS HI 1.54™ Daily Wear Lenses for Correction of Naturally Occurring Myopia and Hyperopia From +20 to - 20 D Sphere (Spectacle Plane) With and Without Astigmatism. Completed NCT00766168
265 Visual Performance After Trifocal vs Extended Range of Vision Presbyopia-correcting Intraocular Lenses Completed NCT03974451
266 Clinical Evaluation of Three Incision-size-dependent Phacoemulsification Systems Completed NCT01429532
267 Patient-Reported Outcomes With LASIK:PROWL-1 Completed NCT01526291
268 A 90 Day Multi-Center, Randomized, Parallel Group Daily Wear Investigation of a New Hybrid Lens SynergEyes SA Manufactured With a Rigid Gas Permeable Center (Petrafocon A) and a Silicone Hydrogel Skirt (Larafilcon A) Compared to SynergEyes A (Paflufocon D Hem-iberfilcon A) Completed NCT00804505
269 Combined Collagen Crosslinking/Ultraviolet-A and Photorefractive Keratectomy or LASIK in Forme Fruste Keratoconus or Eyes With Potentially Elevated Risk of Ectasia Completed NCT01726283 Riboflavin
270 Corneal Transplantation by DMEK - is it Really Better Than DSAEK? Completed NCT02793310
271 Bifocal Soft Contact Lenses - Do They Slow Progression of Myopia Relative to Single Vision Soft Contact Lenses in Children and Adolescents? Completed NCT00214487
272 Clinical Performance Study of Clerio Single Vision and Bifocal Contact Lens Designs Immediately Following Insertion Completed NCT03653715
273 Comparison of Early Changes in Ocular Surface and Inflammatory Mediators Between Lenticule Extraction and Femtosecond Laser-assisted Laser in Situ Keratomileusis Completed NCT02550353
274 Wavefront Analysis and Contrast Sensitivity After Cataract Surgery With Akreos AO Intraocular Lens Implantation: Clinical Comparative Study Completed NCT00863759
275 Determination of Surgical Efficacy and Most Efficient Surgical Parameters for Use With the 2.2, 2.8, and 3.0mm Phacoemulsification Sleeves Used With the Alcon Infinity 1.1mm ABS Flared Tip Completed NCT00289068
276 The Effect of Hydrodynamic Parameters on Corneal Endothelial Cell Loss After Phacoemulsification Completed NCT00370955
277 Evaluation of the Feasibility of Correcting Refractive Error From a Limited Inventory of Ready-made Spectacles: Wearer Retention, Vision Function, Quality of Life and Cost Completed NCT00657670
278 The Effect of Central Corneal Thickness On Intraocular Pressure Measurements With the Goldman Applanation Tonometer, Ocular Blood Flow Pneumatonometer,Tono Pen,Pascal Dynamic Contour Tonometer, and Schiotz Tonometer Completed NCT00570791
279 Deep Lamellar Endothelial Keratoplasty as Surgical Treatment for Corneal Endothelial Decompensation Completed NCT00346138
280 Prescription of Hemangiol in the Treatment of Proliferative Infantile Hemangiomas Requiring Systemic Treatment: Post Marketing Surveillance Study Completed NCT04105517
281 Comparison of Early Changes in Ocular Surface and Inflammatory Mediators Between Lenticule Extraction and Small-Incision Lenticule Extraction Completed NCT02540785
282 Comparison of the Freiburg Visual Acuity Test (FrACT) With the EDTRS- and Landoltring Charts: a) Assessment of the Inter-test Agreement and the Test-retest Reliability b) Analysis of Examinees' / Examiner's Subjective Rating and of Test Durations Completed NCT02198534
283 Randomized Clinical Trial Comparing Transepithelial Corneal Cross-linking Using Iontophoresis and Standard Corneal Cross-linking for the Treatment of Keratoconus Completed NCT02117999
284 Comparison of Early Changes in Ocular Surface and Inflammatory Mediators Among Lenticule Extraction, Laser in Situ Keratomileusis and Femtosecond Laser-assisted Laser in Situ Keratomileusis Completed NCT02551796
285 Optical Low Coherence Reflectometry Enables Preoperative Detection of Zonular Weakness in Pseudoexfoliation Syndrome Completed NCT01298895
286 Comparison Between TPRK Versus AAPRK in Correction of Myopia and Myopic Astigmatism Completed NCT03569423
287 Water Drinking Test and Its Reproducibility in Goldmann Applanation Tonometry and Pneumatic Tonometry Completed NCT03014349
288 Evaluation of the Effectiveness of Alternative Approaches to Providing Spectacles in Secondary School Students in Dar Es Salaam, Tanzania Completed NCT00249275
289 Evaluation of Corneal Hysteresis and Corneal Resistance Factor After Corneal Cross-linking for Keratoconus Completed NCT01411384
290 Evaluation of the Sensitivity, Specificity, and Test Accuracy of Corneal Biomechanical Metrics, Anterior Segment Data and a Combination Model, in Differentiating Forme Fruste Keratoconus (FFK) From Healthy Corneas. Completed NCT01448408
291 A Prospective Trial of Simultaneous Combined Transepithelial Photorefractive Keratectomy and Corneal Collagen Cross-linking for Keratoconus Completed NCT02208089
292 Clinical Effects and Safety of 3% Diquafosol Ophthalmic Solution for Patients With Dry Eye After Cataract Surgery: A Randomized Controlled Trial Completed NCT02608489 Diquafosol (Diquas);Sodium Hyaluronate (Hyalein)
293 PROductivity Study of Presbyopia Elimination in Rural-dwellers (PROSPER) Completed NCT03228199
294 Ahmed Versus Baerveldt Comparison Study Completed NCT00376363
295 To Evaluate Effect of Contact Lens With Alginic Acid (7 Days) in Patients With Dry Eye Completed NCT01918410
296 A Randomised Controlled Research to Asses the Clinical Performance and Effect on Vision Related Quality of Life of Rigid Gas Permeable Scleral Versus Corneal Contact Lenses for Keratoconus and Other Irregular Cornea Disorders Completed NCT02444923
297 Study of the Efficiency and Workflow of Femtosecond Laser Assisted Cataract Surgery in a Spanish Public Hospital Completed NCT03931629
298 Accuracy of Corneal Astigmatism in Different Region Modes Recruiting NCT03299530
299 Visual Outcomes for Toric Efficacy Study Recruiting NCT03728218
300 Assessing the Astigmatism Reducing Effect With Toric IOLs in Eyeswith Low Astigmatism Recruiting NCT03538964
301 The Research of the Neural Mechanisms Underlying Astigmatism Recruiting NCT03735602
302 Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular Cornea Recruiting NCT03140046
303 Post-Approval Study of the TECNIS SYMFONY® Toric Lenses Recruiting NCT03791619
304 A Prospective Evaluation of Topography-guided LASIK Surgery Recruiting NCT03292419
305 SMILE (Small Incision Lenticule Extraction) in the DoD (Department of Defense) Recruiting NCT04072289
306 Comparison of the Outcome of Topography Modified Refraction Correction to Standard Clinical Refraction Correction in Myopic Astigmatic Topography-guided LASIK Recruiting NCT03597906
307 A Combined Retrospective and Prospective Chart Review Analysis of Visual Outcomes Following Excimer Laser Vision Correction Recruiting NCT00778570
308 A Single Center, Randomized Control Study to Compare Efficacy and Safety of Femto-laser Created Clear Corneal Incisions With Manually Created Clear Corneal Incisions During Cataract Surgery Recruiting NCT04082273
309 Accuracy of Welch Allyn Spot™ Vision Screener to Detect Amblyogenic Factors in Developmentally Delayed Children Recruiting NCT03479021
310 Treatment of Vision Disturbances Due to Corneal Irregularities by Trans-epithelial Optical Phototherapeutic Keratectomy (TE-oPTK) Recruiting NCT03841253
311 Clinical Results of Small Incision Lenticule Extraction (SMILE) for the Correction of High Myopia Recruiting NCT04110067
312 A Clinical Validation Study to Evaluate the Performance of a Hand-held Device Supported by a Mobile Application Compared With Standard Eye Care Diagnostic Devices in Measuring Refractive Error of the Eye Recruiting NCT03929588
313 30 Day Fitting of a New Toric Contact Lens Recruiting NCT03970512
314 Evaluating the Ocular Function of Adults With Autism Spectrum Disorder: Interrelationship Between Blinking Reflex and Cornea Innervation. Recruiting NCT04010422
315 Toric Intraocular Lens (IOL) Implantation Compared to Incisional Surgery to Correct Corneal Astigmatism as Part of Cataract Surgery - A Randomised Controlled Clinical Trial Recruiting NCT03633851
316 A Prospective, Controlled Study of Refractive Corneal Cross-linking for Progressive Keratoconus Recruiting NCT03531047
317 INTACS® Prescription Inserts Used to Treat Patients With Keratoconus as a Humanitarian Use Device Recruiting NCT02138669
318 Evaluation of the Feasibility of Fitting of Apioc Contact Lenses in Adults Recruiting NCT03688672
319 A Prospective, Randomized, Fellow Eye Comparison of Fellow Eyes Undergoing LASIK With the Intralase IFS150 Versus the Visumax Recruiting NCT03063164
320 Use of the VisuMax Femtosecond Laser Lenticule Removal Procedure for the Correction of Hyperopia With or Without Astigmatism Recruiting NCT03431571
321 International Multicenter Study on Small Incision Lenticule Extraction(SMILE) Surgery Recruiting NCT02844556
322 Photorefractive Keratectomy for Anisometropic and Isoametropic Amblyopia in Children Refractory to Conventional Treatment Recruiting NCT03610997
323 Zhongshan Ophthalmic Center, Sun Yat-Sen University,China Recruiting NCT03447041
325 The Role of Anterior Segment Optical Coherence Tomography in Evaluation of the Keratoconic Cornea After Corneal Collagen Cross Linking. Recruiting NCT03879421
326 An Evaluation of Quality of Vision and Quality of Life With LASIK, SMILE and PRK Surgery in Physicians Recruiting NCT02576483
327 Biomechanical Properties of Keratoconic Eyes Recruiting NCT02476149
328 Clinical Study to Investigate Rotational Stability, Visual Performance, Contrast Sensitivity, Patient Satisfaction and PCO Rate After Implantation of a Trifocal Toric IOL Recruiting NCT03844828
329 Study of the Safety and Effectiveness of Photochemically Induced Collagen Cross- Linking at Higher Irradiances in Patients With Keratoconus or Ectasia Recruiting NCT01789333 Riboflavin 0.1% ophthalmic solution
330 The Effects of Primary Pterygium on Contrast Sensitivity Preoperatively and Postoperatively Recruiting NCT03406390
331 Prevalence of Binocular Vision Anomalies Before and After Cataract and Refractive Surgery Recruiting NCT03592615
332 Comparison of Clinical Outcomes of Small-incision Lenticule Extraction (SMILE) Between Different Cap Thickness. Recruiting NCT03584555
333 Outcomes of Resident-Performed Laser-Assisted vs Manual Traditional Phacoemulsification Recruiting NCT02561104
334 Guiding the Treatment of Anterior Eye Diseases With Optical Coherence Tomography Recruiting NCT00532051
335 Pilot Study of Femtolaser Assisted Keratoplasty Versus Conventional Keratoplasty Recruiting NCT03619434
336 The Assessment of Tear Layer and Tear Layer Lipid Distribution Pre and 1 Month Post Pterygium Surgery Using a LipiView Ocular Surface Interferometer (LipiView) Recruiting NCT02160769
337 A Study to Evaluate the Safety and Effectiveness of the Biotrue ONEday for Astigmatism Soft Contact Lens When Worn on a Daily Basis Active, not recruiting NCT03681808
338 A Prospective Randomized Comparison of Fellow Eyes Undergoing LASIK or PRK With a Wavefront-guided Excimer Laser Versus a Wavefront-optimized Excimer Laser Active, not recruiting NCT01135719
339 Combined 25-gauge Vitrectomy and Cataract Surgery With Toric Intraocular Lens With Idiopathic Epiretinal Membrane. Active, not recruiting NCT02328157
340 AcrySof Toric IQ A-Code Post-Market Clinical Study Active, not recruiting NCT03350503
341 Patient Quality of Vision and Quality of Life With LASIK Surgery Active, not recruiting NCT02161263
342 Visual Outcomes of an Extended Depth of Focus (EDOF) Intraocular Lens (IOL) Combined With a Multifocal (MF) IOL Active, not recruiting NCT03771274
343 A Prospective Eye to Eye Comparison of LASIK Using Wavefront-guided Treatment Versus Wavefront-optimized Treatment Active, not recruiting NCT01138189
344 The MORE Study: Manifest vs. Online Refraction Evaluation. A Clinical Validation of Online Refraction Active, not recruiting NCT03313921
345 Evaluation of Efficiency and Security of Transepithelial Corneal Collagen Crosslinking With Oxygen to Treat Progressive Keratoconus. Active, not recruiting NCT03584243
346 Clinical Evaluation of a Small Aperture Extended Depth of Focus Intraocular Lens Active, not recruiting NCT03633695
347 Comparison of a 4-mm Ring Shaped and 3.5-mm Ring Shaped PiXL Protocol for Low Grade Myopia Active, not recruiting NCT03987880
348 Femtosecond Laser-assisted Arcuate Incisions Versus Manual Arcuate Incisions Outcomes Enrolling by invitation NCT04126174
349 Comparison Between Standard Deep Anterior Lamellar Keratoplasty (S-DALK) and Intralase Enabled Deep Anterior Lamellar Keratoplaty (IE-DALK) Enrolling by invitation NCT03732599
350 Comparison of Anterior and Posterior Corneal Astigmatism in Patients With Keratoconus and Controls Not yet recruiting NCT03450213
351 INTACS (Intrastromal Corneal Ring Segments) For Corneal Ectasia Not yet recruiting NCT02512432
352 Randomised, Controlled Study Comparing Use of "Off the Shelf" Toric Lenses, With Set Cylindrical Corrections (2.00D or 4.00D) and Combined Limbal Relaxing Incisions and/or Off-axis Lens Rotation, With Fully Targeted Toric Lens Correction. Not yet recruiting NCT04122651
353 Patients' Satisfaction After LASIK Not yet recruiting NCT04109040
354 A Multicenter, Non-controlled and Open-label Trial Following Subjects Implanted Bilaterally With the Toric Extended-depth-of-focus Mini WELL Toric Ready Intraocular Lens for 6 Months After the Second Eye Implant Not yet recruiting NCT03861351
355 A Randomized Controlled Study of Phacoemulsification by the Enlarged Internal Incision and the Regular 2.2mm Incision Not yet recruiting NCT03976791
356 Prevelance of Keratoconus in Individuals Attending Refreactive Surgery Centers in Assiut Not yet recruiting NCT04092426
357 Myofibroblastic Transformation Secondary to Epithelial-stromal Interactions in the Keratoconus (MYKE) Not yet recruiting NCT03990740
358 Changes of the Corneal Endothelial Cell Count After Artisan Phakic Intraocular Lens Implantation Not yet recruiting NCT03266354
359 Corneal Endothelial Cell Loss After Phacoemulsification Compared With Extracapsular Cataract Extraction in Management of Senile Cataract Not yet recruiting NCT03262285
360 Productivity Study of Presbyopia Improvement in Textile Workers Not yet recruiting NCT04172935
361 A Specular Microscopic Study of Corneal Endothelium After Accelerated Corneal Collagen Cross Linking Not yet recruiting NCT04160338
362 Study of the Subjective Refraction Measured With SiVIEW Software Compared to That Obtained Manually by an Expert. Monocentric Cross-sectional Study Not yet recruiting NCT04185701
363 Increasing CrossLinking of Corneal Collagen in Eyes With Progressive Keratoconus or Ectasia No longer available NCT01384773
364 The Clinical Performance of the Silicone Hydrogel Contact Lens on Low to Moderate Astigmatism in Japan Terminated NCT00639353
365 Comparison of Topography Guided LASIK With WaveLight® EX500 to SMILE With Zeiss VisuMax Terminated NCT02987660
366 A Prospective, Multicenter, Randomized Evaluation of Refractive Predictability in Patients With or Without Corneal Astigmatism (Maximum Allowable up to 1.25D) When Using the Cataract Refractive Suite and Standard Manual Techniques Terminated NCT02974140
367 Proof of Concept Study for First-Sight Refractive Error Correction: Direct Comparison to Autorefraction Results in Children 7 to 18 Years of Age Terminated NCT01365884
368 Non-inferiority Trial of Iontophoretic Corneal Collagen Crosslinking (CXL) Compared to Standard Corneal Collagen Crosslinking in Progressive Keratoconus. Terminated NCT01868620
369 Effect of Simple Corneal De-epithelization Associated With a Therapeutic Photokeratectomy in Patients With Evolutive Keratoconus Terminated NCT02857881
370 Randomized Clinical Trial of OCT-guided DSAEK Graft Shaping and Smoothing Terminated NCT01586234
371 Intacs for the Treatment of Keratoconus Terminated NCT00384501
373 The Effect of Computer Eyewear on Viewing Comfort and Performance in Office Work Terminated NCT02925884
374 Comparative Study of Surgical Laser Correction of Astigmatism Withdrawn NCT01680354
375 A Study to Evaluate the Safety and Effectiveness of the 217z Laser With Zyoptix for Lasik Withdrawn NCT00347997
376 Investigation of Corneal Aberrations and Visual Outcomes in Patients Implanted With an AcrySof Toric Intraocular Lens (IOL) Withdrawn NCT00878839
377 Evaluation of Alcon Ladarvision Wavefront-Guided PRK Withdrawn NCT00412295
378 Complete Easy Rub Comparative Efficacy Study Withdrawn NCT01019564
379 The Role of Psychosocial and Other Quality of Life Parameters in Evaluating Functional Changes Prior to and Following Laser In-situ Keratomileusis (LASIK) Withdrawn NCT00344604
380 The Investigation of Corneal Biomechanics Through the Changes in the Intraocular Pressure Withdrawn NCT03658239
381 Deep Lamellar Endothelial Keratoplasty: Small Incision Technique Withdrawn NCT00345020
382 Évaluation de l'Utilisation d'un Photoscreener Comme méthode de dépistage Des problèmes Ophtalmologiques pédiatriques en Haïti Withdrawn NCT02655432
383 Peripheral PresbyLASIK Using the Allegretto Wavelight System For The Treatment of Presbyopia Withdrawn NCT01059006

Search NIH Clinical Center for Astigmatism

Cochrane evidence based reviews: astigmatism

Genetic Tests for Astigmatism

Genetic tests related to Astigmatism:

# Genetic test Affiliating Genes
1 Astigmatism 29

Anatomical Context for Astigmatism

MalaCards organs/tissues related to Astigmatism:

Eye, Endothelial, Testes, Retina, Brain, Thyroid, Skin

Publications for Astigmatism

Articles related to Astigmatism:

(showing 9764, show less)
# Title Authors PMID Year
Inheritance of astigmatism: evidence for a major autosomal dominant locus. 61 56
9718344 1998
Astigmatism in 72 twin pairs. 61 56
2805714 1989
Genetic analysis of indices of corneal power and corneal astigmatism in human populations with varying incidences of strabismus. 61 56
1184316 1975
Ocular phenotype correlations in patients with TWIST versus FGFR3 genetic mutations. 54 61
17070479 2006
[Comparison of PKR and LASIK for the treatment of low myopia: statistic study of refractive and optic results]. 54 61
11965115 2002
[Accuracy and predictability of photorefractive keratectomy for astigmatism correction]. 54 61
11877233 1998
[Surgery in myopic astigmatism: arciform keratotomy and PKR versus PARK]. 54 61
9554138 1997
Clinical Outcomes of an Asymmetric Model of Intrastromal Corneal Ring Segments for the Correction of Keratoconus. 61
31577629 2020
Pterygium Is Related to Short Axial Length. 61
31714404 2020
Long-term Outcomes After LASIK Using a Hybrid Bi-aspheric Micro-monovision Ablation Profile for Presbyopia Correction. 61
32032429 2020
Fluctuation in straylight measurements during the visual recovery phase after small incision lenticule extraction. 61
31399702 2020
Applying Machine Learning Techniques in Nomogram Prediction and Analysis for SMILE Treatment. 61
31647929 2020
Clinical Outcomes of Small Incision Lenticule Extraction in Myopia: Study of Vector Parameters and Corneal Aberrations. 61
32037752 2020
Astigmatism Orientation After Deep Anterior Lamellar Keratoplasty for Keratoconus and Its Correlation With Preoperative Peripheral Corneal Astigmatism. 61
31634226 2020
Comparing refractive outcomes of a standard industry toric IOL calculator using anterior corneal astigmatism and total corneal refractive power. 61
31863399 2020
Optical quality in low astigmatic eyes with or without cylindrical correction. 61
31641885 2020
Refractive Errors and Amblyopia Among Children Screened by the UCLA Preschool Vision Program in Los Angeles County. 61
31647932 2020
Corneal elevation indices and pachymetry values of Saudi myopes using scheimpflug imaging. 61
32020151 2020
Pressure-Induced Interlamellar Stromal Keratitis After Small-Incision Lenticule Extraction Procedure: A Case Report. 61
31688202 2020
Wavefront properties of the anterior and posterior corneal surface after transepithelial photorefractive keratectomy in myopia. 61
32010287 2020
The Effect of Intraoperative Angle Kappa Adjustment on Higher-Order Aberrations Before and After Small Incision Lenticule Extraction. 61
32040010 2020
Comparative evaluation of re-use or replacement of dislocated 3-piece intraocular lenses with a scleral fixation technique. 61
31722807 2020
Surgical treatment of corneal dermoid by using intrastromal lenticule obtained from small-incision lenticule extraction. 61
31735992 2020
Effectiveness of the iPhone GoCheck Kids smartphone vision screener in detecting amblyopia risk factors. 61
31904429 2020
Safety of air tamponade versus corneal hydration for sealing clear corneal incisions in cataract surgery. 61
31953596 2020
Results of a clinical evaluation of a trifocal intraocular lens in Japan. 61
31900871 2020
Higher order aberrations, refractive error development and myopia control: a review. 61
31489693 2020
Corneal Laceration Associated With Upper Eyelid Blepharoplasty. 61
31743279 2020
Repeatability and Agreement of a Swept-Source Optical Coherence Tomography-Based Biometer IOLMaster 700 Versus a Scheimpflug Imaging-Based Biometer AL-Scan in Cataract Patients. 61
30985487 2020
Age- and Gender-Related Characteristics of Corneal Refractive Parameters in a Large Cohort Study. 61
31526796 2020
Deep anterior lamellar keratoplasty in eyes previously treated with collagen crosslinking for keratoconus: 3-year results. 61
31915972 2020
Comparison between refractive outcomes of femtosecond laser-assisted cataract surgery and standard phacoemulsification. 61
31898534 2020
Characterization of the effect of intracorneal ring segment in corneal ectasia after laser refractive surgery. 61
30384777 2020
Comparison of 27-gauge versus 25-gauge vitrectomy results in patients with epiretinal membrane: 6-month follow-up. 61
31956931 2020
Accelerated corneal cross-linking: Efficacy, risk of progression, and characteristics affecting outcomes. A large single-centre prospective study. 61
31945333 2020
Evaluation of the effect of optic zone diameter selection on high-order aberrations in photorefractive keratectomy excimer laser treatment. 61
31925593 2020
Toric intraocular lens in asymmetric astigmatism. 61
31982994 2020
Targeting Anterior Corneal Astigmatism With Topography-Guided Ablation Ignores Ocular Residual Astigmatism, Resulting in Inferior Outcomes. 61
31917855 2020
How much astigmatism to treat in cataract surgery. 61
31770161 2020
Modeling Changes in Corneal Parameters With Age: Implications for Corneal Disease Detection. 61
31469999 2020
Surgical Intervention of Periocular Infantile Hemangiomas in the Era of β-Blockers. 61
31809485 2020
Dry eye symptoms and signs in children wearing OK lenses for six months in China. 61
32000988 2020
Choroidal thickness in keratoconus. 61
31432355 2020
A Modified Customized Rigid Gas Permeable Contact Lens to Improve Visualization During Phacoemulsification in Ectatic Corneas. 61
31976337 2020
Deep anterior lamellar keratoplasty techniques; predescemetic versus big bubble: Anterior segment optical coherence tomography study. 61
31987676 2020