81 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
21 Recruiting Clinical Performance of Habitual Wearers of Avaira Toric When Refitted With Clariti Toric Lenses
Condition: Astigmatism
Interventions: Device: somofilcon A;   Device: enfilcon A
22 Recruiting A Prospective Safety and Effectiveness Study of the 500 Hz Technolas Perfect Vision Excimer Laser in Asian Eyes Using LASIK
Conditions: Myopia;   Hyperopia;   Presbyopia
Intervention: Device: Proscan, Zyoptix and Supracor
23 Unknown  Compare Anterior Chamber Biometry in Healthy and Post-LASIK Patients
Conditions: Myopia;   Astigmatism
Intervention:
24 Recruiting Wavefront-guided PRK vs Wavefront-optimized PRK
Conditions: Myopia;   Astigmatism
Interventions: Procedure: Wavefront-guided PRK;   Procedure: Wavefront-optimized PRK
25 Unknown  Study on the Effect of Mitomycin C 0.02% on the Corneal Endothelial After Photorefractive Keratectomy in Moderate Myopia
Condition: Myopia
Interventions: Drug: Mitomycin C 0.02%;   Drug: Placebo
26 Recruiting Prospective Evaluation of the Long-term Effectiveness of the Femtosecond Laser-assisted Arcuate Incisions
Condition: Astigmatism
Intervention:
27 Unknown  A Trial of Toric Versus Non-toric Intraocular Lenses in Phacoemulsification Cataract Surgery
Conditions: Cataract;   Astigmatism
Intervention: Device: Phacoemulsfication cataract surgery and intra-ocular lens implant
28 Recruiting A Prospective Safety and Effectiveness Study of the 500 Hz Technolas Perfect Vision Excimer Laser Using LASIK
Conditions: Myopia;   Hyperopia
Intervention: Device: Proscan
29 Recruiting Clinical and Genetic Studies in Families With Myopia and Related Diseases
Condition: Myopia
Intervention:
30 Not yet recruiting VERION Versus Conventional, Manual Ink-marking in Toric IOL Implantation
Condition: Astigmatism
Interventions: Device: VERION for toric IOL alignment;   Procedure: Conventional, manual ink-marking for toric IOL alignment
31 Unknown  Genomewide Screening of Pathological Myopia
Condition: Pathological Myopia
Intervention:
32 Recruiting Efficacy Study of Different Lens Treatments on Chinese Adolescent Myopia
Condition: Progressive Myopia
Interventions: Other: Spectacles;   Other: Myovision;   Other: Orthokeratology
33 Recruiting Rotational Stability After Nanoflex Collamer Toric Intraocular Lens Implantation in Astigmatic Patients
Condition: Astigmatism
Interventions: Procedure: Phacoemulsification with toric Nanoflex IOL implantation;   Device: NanoFlex toric Intraocular Lens
34 Unknown  Trial of Myopia Prevention Using +3D Lenses
Condition: Myopia
Intervention: Device: +3D Lenses
35 Recruiting Initial Treatment With Bevacizumab in Choroidal Neovascularization Associated to High Myopia
Condition: Choroidal Subfoveal/Juxtafoveal Neovascularization in High Myopia
Intervention: Drug: Bevazizumab intravitreal injection
36 Recruiting Advanced Surface Ablation (ASA) vs Laser-Assisted In Situ Keratomileusis (LASIK)
Conditions: Nearsightedness;   Farsightedness;   Astigmatism
Intervention:
37 Recruiting Impact of a Corneal Pre-cut on Wound Architecture and Astigmatism in Cataract Surgery - a Pilot Study
Condition: Cataract
Interventions: Procedure: Corneal precut 600µm;   Procedure: Corneal stabincision
38 Unknown  Prospective Evaluation of Limbal Relaxing Incision (LRI) in Conjunction With Phacoemulsification Surgery for Astigmatic Correction in Chinese Eyes
Condition: Corneal Astigmatism
Intervention: Procedure: Limbal relaxing incision
39 Recruiting Limbal Relaxing Incision Versus Toric Intraocular Lens for Corneal Astigmatism During Cataract Surgery.
Conditions: Astigmatism;   Cataract
Interventions: Procedure: Limbal Relaxing Incisions;   Device: Toric Intraocular Lens
40 Recruiting Effect of Orthokeratology Versus Spectacles on Myopia Progression in Chinese Children: A Crossover Trial
Condition: Myopia
Interventions: Device: Orthokeratology;   Device: Spectacle

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Indicates status has not been verified in more than two years