77 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
1 Unknown  First-Sight Refractive Error Correction: Direct Comparison to Autorefraction Results in Children 7 to 18 Years of Age
Condition: Refractive Error
Intervention:
2 Unknown  Piggyback Sulcoflex Toric IOL for Correcting Refractive Error Following Corneal Transplantation
Conditions: Refractive Error;   Corneal Implantation;   Intraocular Lens Implantation
Interventions: Procedure: toric intraocular lens implantation;   Procedure: Sulcoflex intraocular lens implantation
3 Not yet recruiting Dispensing Study to Assess the Visual Performance of Optimised Prototype Contact Lenses
Conditions: Presbyopia;   Refractive Error
Interventions: Device: Etafilcon A;   Device: Lotrafilcon B;   Device: Nelfilcon A;   Device: Delefilcon A
4 Recruiting Optical Defocus to Stimulate Eye Elongation in Hyperopia
Conditions: Hyperopia;   Refractive Error
Interventions: Device: Simultaneous Vision Bifocal Soft Contact Lenses;   Device: Single Vision Soft Contact Lenses
5 Recruiting Bifocal Lenses In Nearsighted Kids
Condition: Refractive Errors
Interventions: Device: Biofinity Multifocal D +1.50 add;   Device: Biofinity Multifocal D +2.50 add;   Device: Biofinity
6 Recruiting Comparison of Two Marketed Silicone Hydrogel Lenses
Condition: Refractive Error
Interventions: Device: Lotrafilcon B contact lenses;   Device: Samfilcon A contact lenses
7 Recruiting Clinical Evaluation of MyDay™ and 1-DAY ACUVUE® TruEye®
Condition: Refractive Error
Interventions: Device: Stenfilcon A contact lenses;   Device: Narafilcon A contact lenses
8 Recruiting A New More Efficient Cycloplegia Scheme
Condition: Refractive Errors
Interventions: Drug: Cyclopentolate;   Drug: Cyclopentolate+tropicamide+phenylephrine
9 Recruiting Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
Conditions: Cataract;   Refractive Errors
Intervention:
10 Unknown  The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive Keratectomy
Condition: Refractive Errors
Intervention: Drug: Pregabalin
11 Recruiting Corneal Epithelium Repair and Therapy Using Autologous Limbal Stem Cell Transplantation
Conditions: Corneal Disease;   Pterygium;   Myopia;   Hyperopia
Interventions: Procedure: LSCs and amniotic membrane (Modified Technique);   Procedure: Amniotic membrane only (Traditional Technique);   Procedure: PRK, LSCs, and amniotic membrane (Modified Technique);   Procedure: PRK only (Traditional Technique);   Drug: Levofloxacin;   Drug: Betamethasone;   Drug: Limbal stem cells (LSCs)
12 Recruiting The Efficacy and Safety of Periocular Acupoint Stimulation on Myopia Progression in Children
Condition: Myopia
Intervention: Device: massager
13 Not yet recruiting Myopia:the Role of Cone Opsin Mutations & Glasses That Control Axial Elongation
Condition: Myopia
Interventions: Other: Spectacles with red-blocking tint;   Other: Spectacles with holographic diffuser and color neutral tint;   Other: Spectacles with holographic diffuser and red-blocking tint;   Other: Spectacles with color neutral tint
14 Unknown  The Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study
Condition: Myopia
Intervention:
15 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
16 Recruiting Performance of a Multifocal Contact Lens - Presbyopia Study
Condition: Presbyopia
Intervention: Device: 1-Day ACUVUE® MOIST® MULTIFOCAL
17 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)
18 Recruiting Presbyopia Compensation: Looking for Electrophysiological Predictors
Condition: Presbyopia
Intervention: Device: contact lenses
19 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:
20 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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Indicates status has not been verified in more than two years