Clinical trials: Eye--Refractive Errors
Myopia
Topography-guided LASIK Surgery
The investigators are analyzing outcomes of topography-guided LASIK surgery in participants with myopia and myopic astigmatism
- Trial name
- NCT03292419
- Testing
- Topography-guided LASIK
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Stanford University
Myopia
Comparison of Lens Fit and Lens Power of a New Contact Lens to Two Marketed Contact Lenses in a Population of Soft Contact Lens Wearers
The purpose of this study is to evaluate the comparability of lens fit and lens power of a new contact lens to the lens fit and lens power of two marketed lenses.
- Trial name
- NCT01244529
- Testing
- galy A Plus, seno A, galy A
- Where
- 2 sites in United Kingdom
- Volunteers
- 41 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Presbyopia
Compare Visual Outcomes Using a New Diagnostic Device
Evaluation of preoperative corrected distance visual acuity (CDVA) obtained with VirtIOL device compared to postoperative CDVA.
- Trial name
- NCT04037631
- Testing
- Diagnostic device
- Where
- Germany
- Volunteers
- 24 people
- Sponsor
- Carl Zeiss Meditec AG
Myopia, Hyperopia
Clinical Performance of Habitual Wearers of Bioclear 1-day Lenses When Refitted With Biomedics 1-day Extra for 1 Week
Open label, 1-week daily disposable, dispensing study
- Trial name
- NCT02406495
- Testing
- filcon IV 1, ocufilcon D
- Where
- Spain
- Volunteers
- 40 people
- Sponsor
- CooperVision, Inc.
Hyperopia
Clinical Trial of the Femtosecond Laser System VisuMax for Refractive Correction of Hyperopia by Means of Lenticule Extraction
This is a feasibility and clinical evaluation study of the VisuMax femtosecond laser for refractive correction of hyperopia using the small incision lenticule extraction (ReLEx smile) method.
- Trial name
- NCT02316041
- Testing
- Small incision lenticule extraction, ReLEx® (SMILE)
- Where
- Nepal
- Volunteers
- 220 people, healthy volunteers welcome
- Sponsor
- Tilganga Institute of Ophthalmology
Myopia
Ophthalmic Compatibility During Seven Days of Continuous Wear of Silicone Hydrogel Lenses
The purpose of this study is to assess the ophthalmic compatibility of three different silicone hydrogel lenses worn on an overnight basis for six nights.
- Trial name
- QUINCE (NCT00934102)
- Testing
- Narafilcon A contact lens, Lotrafilcon A contact lens, Galyfilcon A contact lens
- Where
- Canada
- Volunteers
- 57 people
- Sponsor
- CIBA VISION
Myopia
BIOCLEAN FIRST CARE EX in Combination With Biofinity Lens
To determine if patients are unreactive to the lens care solution / Biofinity combination.
- Trial name
- NCT02196766
- Testing
- Bioclean First Care EX / comfilcon A, Aosept Clearcare / comfilcon A
- Where
- 3 sites in Japan
- Volunteers
- 30 people
- Sponsor
- CooperVision, Inc.
Glaucoma, Myopia
Corrected Measurement of the Retinal Nerve Fiber Layer Thickness by Optic Disc Configuration With the Cirrus HD OCT
Because the measurement of the retinal nerve fiber layer thickness is very sensitive to the position of measurement, it may be incorrect in patients with the tilted disc.
- Trial name
- NCT00741130
- Where
- South Korea
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Yonsei University
Presbyopia
Luminous Efficiency Function V(λ)' of Patients That Underwent Pseudophakic Presbyopic Corrections
Primary objective of this study is to construct and validate a modified luminous efficiency function that addresses the distinct total eye light transmittance of patients that underwent bilateral pseudophakic presbyopic…
- Trial name
- NCT04263636
- Testing
- Phacoemulsification with bilateral trifocal diffractive IOLs
- Where
- Greece
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
Precocious Puberty, Early Puberty
Effect of Exogenous Growth Hormone on Ocular Findings
Body size and eye function play an essential role in adapting to the environment and human survival. Growth hormone is commonly recognized by its effect on the height of individuals; Although from an evolutionary perspective, the…
- Conditions
- Precocious Puberty, Early Puberty, Refraction Error
- Trial name
- NCT05338411
- Where
- 2 sites in Iran
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Isfahan University of Medical Sciences
Presbyopia
A Clinical Trial of The VisAbility Micro Insert System for Presbyopic Patients
The purpose of this study is to evaluate the safety and effectiveness of the VisAbility Micro Insert System for the improvement of near visual acuity in presbyopic patients.
- Trial name
- NCT02374671
- Testing
- VisAbility Micro Insert
- Where
- 14 sites in United States
- Volunteers
- 365 people, healthy volunteers welcome
- Sponsor
- VisDura, Inc.
Myopia
Optical Coherence Pachymetry to Evaluate Central Corneal Ablation Depth in Myopic Femtosecond Laser in Situ Keratomileusis
Prospective study aiming to measure central ablation depth during excimer laser surgery in myopic patients operated with femtosecond laser assisted LASIK with intraoperative OCP, before and after laser ablation.
- Trial name
- PACO (NCT02893644)
- Where
- France
- Volunteers
- 50 people
- Sponsor
- Fondation Ophtalmologique Adolphe de Rothschild
Cataract, Refractive Error
A Study of Interventions to Reduce Disability From Visual Loss in Nursing Home Residents
The purpose of this clinical trial is to determine if interventions within the nursing home to restore vision, or cope with visual loss, in residents with visual impairment result in improvement or less decline in mobility…
- Conditions
- Cataract, Refractive Error, Low Vision
- Trial name
- NCT00348621
- Testing
- Visual impairment intervention program
- Where
- United States
- Volunteers
- 2,544 people
- Sponsor
- Johns Hopkins University
Amblyopia, Myopia
Performance of a Photoscreener for Vision Screening in a Haitian Pediatric Population
Screening of haitian children between the ages of 3 and 6 years old for amblyogenic risk factors with the use of the Spot photoscreener. The photoscreener results will be compared to the complete ophthalmologic evaluation.
- Conditions
- Amblyopia, Myopia, Hyperopia, Astigmatism
- Trial name
- POPH (NCT02655432)
- Testing
- Spot photoscreener, Ophthalmologic evaluation, Cyclopleged refraction
- Where
- 3 sites in Haiti
- Volunteers
- healthy volunteers welcome
- Sponsor
- Université de Montréal
Retinal Detachment, Refractive Errors
Visual Outcome of Vitrectomy After Refractive Surgery
Results of retinal detachment surgery may be affected in cases with history of previous intraocular surgery.
- Trial name
- NCT05583253
- Testing
- Vitrectomy
- Where
- Egypt
- Volunteers
- 50 people
- Sponsor
- Benha University
Myopia
Bromday Versus Nevanac Eye Drops to Control Pain Following Photorefractive Keratectomy
This study will compare the effect of two topical non-steroidal antiinflammatory agents to control pain after photorefractive keratectomy (PRK) eye surgery.
- Trial name
- NCT01475877
- Testing
- Bromfenac
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Virdi Eye Clinic
Myopia
Clinical Performance of the OxyAqua Daily Disposable Silicone Hydrogel Soft Contact Lens
The objective of this study is to demonstrate that the OxyAqua silicone hydrogel soft contact lens could be prescribed as a supportive care for myopes.
- Trial name
- NCT03139201
- Testing
- OxyAqua, Si-Hy
- Volunteers
- 36 people
- Sponsor
- Visco Vision Inc.
Astigmatism
Performance of Fanfilcon A Toric Lenses After at Least One Month Wearing Enfilcon A Toric Lenses
This is a prospective, multi-center, subject-masked, bilateral, daily wear, two-month dispensing study
- Trial name
- NCT02921412
- Testing
- fanfilcon A
- Where
- 4 sites in United States
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Astigmatism
Dispensing Evaluation of New Daily Disposable Toric Soft Contact Lens.
The purpose of this study is to determine the relative performance of a new daily disposable toric soft contact lens against a daily disposable toric contact lens currently available in market, specifically with regards to the…
- Trial name
- NCT01055132
- Testing
- Etafilcon A toric contact lens, Nelfilcon A toric contact lens
- Where
- 6 sites in United States
- Volunteers
- 70 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia
Clinical Evaluation Of Two Daily Disposable Contact Lenses And A Monthly Replacement Lens
The objective of the study is to compare the clinical performance of silicone hydrogel daily disposable contact lenses, conventional hydrogel daily disposable contact lenses and silicone hydrogel monthly replacement contact…
- Trial name
- NCT01151371
- Testing
- narafilcon B contact lens, nelfilcon A contact lens, lotrafilcon B contact lens
- Where
- 28 sites in United States
- Volunteers
- 452 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
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