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71 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
21 Recruiting Safety and Efficacy Study of A Viscoelastic-free Method for Implantable Collamer Lens (ICL) Implantation
Condition: Myopia
Interventions: Device: viscoelastic-free implantation system;   Device: standard viscoelastic-assisted Implantation system
22 Recruiting Assessment of Near Vision Capacity in Different Light Intensities
Condition: Presbyopia
Intervention: Procedure: BB-Phaco
23 Recruiting Functional Assessment of ADL in Patients Who Underwent Bifocal and Trifocal Presbyopic Correction
Condition: Presbyopia
Interventions: Procedure: Phaco with Restor;   Procedure: Phaco with Panoptix
24 Recruiting Comparison of Next Generation Laser Techniques of Myopia Correction: iDesign vs. SMILE
Condition: Myopia
Interventions: Other: iDesign;   Other: SMILE
25 Recruiting Safety, Tolerability and Efficacy of PresbiDrops (CSF-1) in Presbyopic Subjects
Condition: Presbyopia
Interventions: Drug: PresbiDrops (CSF-1);   Drug: Placebo
26 Recruiting Comparison Between FS- LASIK and FS-SMILE for Correction of Myopia and Myopic Astigmatism
Condition: Myopia
Interventions: Procedure: FS-SMILE;   Procedure: FS- LASIK;   Device: Visumax device;   Device: FS 200 device
27 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
28 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
29 Not yet recruiting Influence of Trabeculectomy and Phaco-trabeculectomy on Corneal Astigmatism
Conditions: Astigmatism;   Glaucoma
Interventions: Device: Biometry;   Device: Refraction;   Device: Corneal Topography
30 Recruiting The Relationship Between Structure and Visual Function in Myopia Foveoschisis
Condition: High Myopia
Intervention: Procedure: macular buckling surgery
31 Recruiting Evaluation of the Safety and Efficacy of Corneal Cross Linking for the Treatment of Myopia.
Condition: Myopia
Intervention: Device: CXL Myopie
32 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
33 Recruiting Pseudophakic Astigmatic Reduction With Verion-LenSx Arcuate Incisions
Condition: Astigmatism
Intervention: Procedure: Verion-LenSx
34 Recruiting Safety, Tolerability, and Efficacy of PresbiDrops (CSF-1) , a Topical Ophthalmic Drug for Presbyopia
Condition: Presbyopia
Interventions: Drug: PresbiDrops (CSF-1);   Drug: Placebo
35 Recruiting Functional and Physiological Changes Induced by Pinhole Glasses in Presbyopia
Condition: Pinhole
Intervention: Device: Trayner Pinhole Glasses (Trayner Glasses, Ivybridge Devon, U.K.)
36 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
37 Recruiting Shamir Aspheric Ophthalmic Lenses (MyLens) for Myopic Control Clinical Trial
Condition: Myopia
Intervention: Device: Aspheric lens
38 Recruiting Myopia Control Using Soft Bifocal Lenses
Condition: Myopia
Intervention: Device: Bifocal soft contact lenses
39 Recruiting Clinical Efficacy of the Pinhole Soft Contact Lenses for Correcting Presbyopia
Condition: Presbyopia
Intervention: Device: Pinhole Soft Contact Lens apply for presbyopia
40 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

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