82 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
21 Not yet recruiting Clinical Evaluation of the Lenstec SBL-3 Multifocal Intraocular Lens
Conditions: Cataracts;   Presbyopia
Interventions: Device: SBL-3 multifocal intraocular lens;   Device: Control monofocal intraocular lens
22 Recruiting Performance of a Multifocal Contact Lens - Presbyopia Study
Condition: Presbyopia
Intervention: Device: 1-Day ACUVUE® MOIST® MULTIFOCAL
23 Not yet recruiting Scleral Versus Corneal RGP Contact Lenses in Irregular Cornea Disorders
Conditions: Irregular; Contour of Cornea;   Keratoconus;   Pellucid Marginal Corneal Degeneration;   Injury of Cornea;   Irregular Astigmatism
Interventions: Device: Scleral rigid gas permeable contact lenses (Zenlens™);   Device: Corneal lenses (Rose K2)
24 Recruiting Presbyopia Compensation: Looking for Electrophysiological Predictors
Condition: Presbyopia
Intervention: Device: contact lenses
25 Recruiting Inherited Retinal Degenerative Disease Registry
Conditions: Eye Diseases Hereditary;   Retinal Disease;   Achromatopsia;   Bardet-Biedl Syndrome;   Bassen-Kornzweig Syndrome;   Batten Disease;   Best Disease;   Choroidal Dystrophy;   Choroideremia;   Cone Dystrophy;   Cone-Rod Dystrophy;   Congenital Stationary Night Blindness;   Enhanced S-Cone Syndrome;   Fundus Albipunctatus;   Goldmann-Favre Syndrome;   Gyrate Atrophy;   Juvenile Macular Degeneration;   Kearns-Sayre Syndrome;   Leber Congenital Amaurosis;   Refsum Syndrome;   Retinitis Pigmentosa;   Retinitis Punctata Albescens;   Retinoschisis;   Rod-Cone Dystrophy;   Rod Dystrophy;   Rod Monochromacy;   Stargardt Disease;   Usher Syndrome
Intervention:
26 Recruiting Functional Assessment of Activities of Daily Living (ADL) in Patients Who Underwent Mini-monovision Correction
Condition: Presbyopia
Intervention: Other: Assessment of visual capacity
27 Recruiting Evaluation of the FluidVisionTM AIOL With an Improved Injector
Condition: Presbyopia
Intervention: Device: FluidVisionTM accommodating intraocular lens
28 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
29 Not yet recruiting Clinical Trial With PRECIZON Presbyopic
Conditions: Cataract;   Presbyopia
Intervention: Device: PRECIZON Presbyopic
30 Not yet recruiting Rayner Toric IOL Rotational Stability
Conditions: Cataract;   Corneal Astigmatism
Interventions: Procedure: Cataract surgery;   Device: Rayner T-flex Toric IOLs
31 Recruiting A Clinical Trial of The VisAbility Implant System Presbyopic Patients
Condition: Presbyopia
Intervention: Device: VisAbility Implant Model SGP-046
32 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
33 Recruiting Combined 25-gauge Vitrectomy and Cataract Surgery With Toric Intraocular Lens With Idiopathic Epiretinal Membrane.
Conditions: Cataract;   Epiretinal Membrane;   Corneal Astigmatism
Interventions: Device: Vitrectomy with cataract surgery and toric IOL;   Device: Vitrectomy with cataract surgery and common IOL
34 Recruiting Clinical Trial of the Femtosecond Laser System VisuMax for Refractive Correction of Hyperopia by Means of Lenticule Extraction
Condition: Hyperopia
Interventions: Procedure: Small incision lenticule extraction;   Device: ReLEx®  (SMILE)
35 Recruiting Development of a Validated Chart for Intermediate Vision Assessment
Conditions: Myopia;   Hyperopia;   Presbyopia;   Astigmatism
Intervention: Other: Intermediate Visual acuity (IVA) assessment
36 Recruiting Clinical Performance of Habitual Wearers of Avaira Toric When Refitted With Clariti Toric Lenses
Condition: Astigmatism
Interventions: Device: somofilcon A;   Device: enfilcon A
37 Recruiting Dichoptic Virtual Reality Therapy for Amblyopia in Adults
Conditions: Amblyopia;   Anisometropia;   Strabismus
Interventions: Device: Dichoptic therapy;   Other: Patching therapy;   Device: Dioptic (non-dichoptic) therapy
38 Recruiting Myopia Control With the Multi-segment Lens
Condition: Myopia
Intervention: Device: Multiple-Segment spectacle lens
39 Recruiting Effect of Orthokeratology Versus Spectacles on Myopia Progression in Chinese Children: A Crossover Trial
Condition: Myopia
Interventions: Device: Orthokeratology;   Device: Spectacle
40 Recruiting Contact Lenses and Myopia
Condition: Myopia
Intervention: Device: Contact lenses

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Indicates status has not been verified in more than two years