68 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
21 Not yet recruiting Combined Atropine With Orthokeratology in Childhood Myopia Control (AOK) -A Randomized Controlled Trial
Condition: Myopia
Interventions: Drug: 0.01% atropine eye drops;   Device: ortho-k
22 Recruiting Evaluating and Improving Functional Driving Vision of Patients With Astigmatism: Phase 3
Condition: Astigmatism
Interventions: Device: Placebo Lenses;   Device: Spherical Lenses;   Device: Toric Lenses
23 Not yet recruiting Influence of Trabeculectomy and Phaco-trabeculectomy on Corneal Astigmatism
Conditions: Astigmatism;   Glaucoma
Interventions: Device: Biometry;   Device: Refraction;   Device: Corneal Topography
24 Recruiting The Relationship Between Structure and Visual Function in Myopia Foveoschisis
Condition: High Myopia
Intervention: Procedure: macular buckling surgery
25 Recruiting Evaluation of the Safety and Efficacy of Corneal Cross Linking for the Treatment of Myopia.
Condition: Myopia
Intervention: Device: CXL Myopie
26 Recruiting A Safety, Efficacy and Pharmacokinetic Study of AGN-199201 and AGN-190584 in Patients With Presbyopia
Condition: Presbyopia
Interventions: Drug: AGN-199201 ophthalmic solution;   Drug: AGN-190584 ophthalmic solution;   Drug: AGN-199201 Vehicle;   Drug: AGN-190584 Vehicle
27 Recruiting Pseudophakic Astigmatic Reduction With Verion-LenSx Arcuate Incisions
Condition: Astigmatism
Intervention: Procedure: Verion-LenSx
28 Recruiting Safety, Tolerability, and Efficacy of PresbiDrops, a Topical Ophthalmic Drug for Presbyopia
Condition: Presbyopia
Interventions: Drug: PresbiDrops;   Drug: Placebo
29 Recruiting Functional and Physiological Changes Induced by Pinhole Glasses in Presbyopia
Condition: Pinhole
Intervention: Device: Trayner Pinhole Glasses (Trayner Glasses, Ivybridge Devon, U.K.)
30 Recruiting Long Term Effects of Multifocal Orthokeratology on Corneal and Choroidal Structures in Healthy Subjects With Myopia- A Pilot Study
Condition: Myopia
Intervention: Device: Orthokeratology lens
31 Recruiting Shamir Aspheric Ophthalmic Lenses (MyLens) for Myopic Control Clinical Trial
Condition: Myopia
Intervention: Device: Aspheric lens
32 Recruiting Myopia Control Using Soft Bifocal Lenses
Condition: Myopia
Intervention: Device: Bifocal soft contact lenses
33 Recruiting Clinical Efficacy of the Pinhole Soft Contact Lenses for Correcting Presbyopia
Condition: Presbyopia
Intervention: Device: Pinhole Soft Contact Lens apply for presbyopia
34 Recruiting A Study of the Concurrent Use of AGN-190584 and AGN-199201 in Participants With Presbyopia
Condition: Presbyopia
Interventions: Drug: AGN-199201 ophthalmic solution;   Drug: AGN-190584 ophthalmic solution;   Drug: AGN-190584 vehicle;   Drug: AGN-199201 + AGN-190584 Combination;   Drug: AGN-199201 vehicle
35 Recruiting Pilot Study of Accommodative/Vergence Therapy to Modify Accommodative Function in Children With Myopia
Condition: Myopia
Intervention: Other: accommodative/vergence therapy
36 Recruiting An Evaluation of LASIK and PRK Surgery in Physicians
Conditions: Nearsightedness;   Farsightedness;   Astigmatism
Intervention: Behavioral: Questionnaire (QoV questionnaire)
37 Recruiting High Resolution Wavefront-guided vs. Wavefront Optimized LASIK
Conditions: Nearsightedness;   Astigmatism
Intervention: Procedure: LASIK
38 Not yet recruiting Echothiophate Iodide for the Prevention of Progression of Myopia
Condition: Myopia
Interventions: Drug: Echothiophate Iodide 0.03% Ophthalmic Solution;   Drug: Carboxymethylcellulose Sodium (0.5%)
39 Recruiting Presbyopia Compensation: Looking for Electrophysiological Predictors
Condition: Presbyopia
Intervention: Device: contact lenses
40 Recruiting Functional Assessment of Activities of Daily Living (ADL) in Patients Who Underwent Mini-monovision Correction
Condition: Presbyopia
Intervention: Other: Assessment of visual capacity

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Study has passed its completion date and status has not been verified in more than two years.