Clinical trials: Visual Acuity
Amblyopia, Refractive Errors
Vision Screening for the Detection of Amblyopia
INTRODUCTION. Amblyopia is defined as the loss of visual acuity (VA) in one or both eyes, without any obvious structural or pathological anomalies.
- Conditions
- Amblyopia, Refractive Errors, Anisometropia, Strabismus
- Trial name
- NCT01430247
- Testing
- Amblyopia screening
- Where
- Croatia
- Volunteers
- 7,000 people
- Sponsor
- Mladen Busic
Macular Holes
Evaluation of Anatomic and Visual Outcomes of Initially Closed Macular Holes
To evaluate the anatomic and visual outcomes in patients with initially closed macular holes after vitreoretinal surgery and with one to seven years of follow-up.
- Trial name
- NCT01229657
- Where
- China
- Volunteers
- 79 people
- Sponsor
- Sun Yat-sen University
Myopia, Visual Rehabilitation
Exploring Perceptual Learning in Blurred Gabor Discrimination for Low-Myopic Children
This exploratory study investigates whether perceptual learning using blurred Gabor stimuli can improve uncorrected distance visual acuity in children aged 6-10 years with low myopia.
- Conditions
- Myopia, Visual Rehabilitation, Perceptual Learning
- Trial name
- NCT07107646
- Testing
- vision training system, VTS
- Where
- Taiwan
- Volunteers
- 30 people
- Sponsor
- National Taiwan University Hospital
Visual Acuity
Study to Evaluate Visual Acuity Measured With the EyeQue Insight Versus a Standard Eyechart.
Open label exploratory study of the EyeQue Insight in healthy volunteers >=7 years of age.
- Trial name
- NCT04474041
- Testing
- EyeQue Insight
- Where
- United States
- Volunteers
- 89 people, healthy volunteers welcome
- Sponsor
- EyeQue Corp.
Visual Acuity
Visual Performance of Soft Contact Lenses With Myopia Control Optics
This is a multi-site, bilateral, dispensing, randomized, controlled, single-masked, 3x3 crossover study with a run-in period.
- Trial name
- NCT05141448
- Testing
- 1-Day Acuvue Moist, EMO-118, EMO-114
- Where
- United States
- Volunteers
- 79 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Visual Acuity
Evaluating Accommodative Responses of Soft Contact Lenses for Myopia Control
This is a bilateral, non-dispensing, randomized, controlled, double-masked, 7x7 cross-over study. Each subject will be bilaterally fitted with one of the 7 test articles in each of the 7 periods for a total of four visits.
- Trial name
- NCT03635528
- Testing
- Test Lens 1, Test Lens 2, Test Lens 3
- Where
- United States
- Volunteers
- 11 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Keratoconus
Comparison of Partial Removal and Total Removal of the Corneal Epithelium on Keratoconus
The purpose of this study is to determine which surgical method makes less corneal haze
- Trial name
- NCT01809977
- Testing
- collagen cross-linking procedure (total removal), collagen cross-linking procedure (partial removal)
- Where
- Iran
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Isfahan University of Medical Sciences
Visual Spatial Processing
Accuracy of Mobile-Based Vision Charts.
Analyzing the accuracy of mobile-based distant vision charts in clinical practice as an economic alternative for standard vision charts.
- Trial name
- NCT05251155
- Testing
- Distant best corrected visual acuity assessment
- Where
- Egypt
- Volunteers
- 288 people, healthy volunteers welcome
- Sponsor
- Benha University
Cataract
Tilt Prediction of Clareon Intraocular Lens
Misalignment of intraocular lenses can cause severe loss of visual quality. Different types of misalignments are known. Tilt, one type of intraocular lens misalignment is thought to play a negative role for the optical…
- Trial name
- NCT06595693
- Where
- Austria
- Volunteers
- 52 people
- Sponsor
- Johannes Kepler University of Linz
Visual Acuity
Evaluating Visual Acuity and Initial Fit Performance of Two Soft Contact Lenses
This is a multi-center, randomized, controlled, double-masked, 2x2 cross-over, non-dispensing study to compare visual acuity and lens fit performance.
- Trial name
- NCT04954833
- Testing
- EMO-200, EMO-118
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Normal Individuals
Normative Values for Instrumented Gaze Stabilization Test and Dynamic Visual Acuity Test Following Fatigue
The goal of this observational study is to learn how well normal individuals can see when they move their head before and after activity.
- Trial name
- NCT07847372
- Testing
- No intervention
- Where
- 2 sites in United States
- Volunteers
- 42 people
- Sponsor
- Cathey Norton
Amblyopia, Amblyopia Unilateral
Valproate for the Treatment of Residual Amblyopia
The goal of this clinical trial is to determine the efficacy of valproate as an adjunct therapy to treat amblyopia beyond the critical period in children aged 8-17 years who have amblyopia of ≥3 lines of interocular…
- Conditions
- Amblyopia, Amblyopia Unilateral, Amblyopia, Anisometropic, Amblyopia Strabismic
- Trial name
- VARA (NCT07226141)
- Testing
- Valproate, Patch
- Where
- United States
- Volunteers
- 28 people
- Sponsor
- Boston Children's Hospital
Visual Acuity
Effects of Forward Head Posture Correction on Visual Acuity in Low Level Visually Impaired University Students
The aim of this research is to find the effect of forward head posture correction on visual acuity and fatigue in low level visually impaired university students.
- Trial name
- NCT06019806
- Testing
- POSTURAL CORRECTION four exercises, postural Correction education with a manuscript
- Where
- Pakistan
- Volunteers
- 48 people
- Sponsor
- Riphah International University
Retinal Dystrophies, Color Vision Defects
Natural History Study of Inherited Retinal Diseases
This prospective, observational investigation seeks to delineate the interplay between chromatic vision deficits and both functional visual outcomes and anatomical retinal biomarkers in individuals affected by Inherited Retinal…
- Conditions
- Retinal Dystrophies, Color Vision Defects, Vision Disorders, Macular Degeneration
- Trial name
- MojiLVCDT (NCT07085533)
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Zhongmou Therapeutics
Vestibulocochlear Nerve Diseases, Vestibular Disorder
Vestibular Balance Therapy Intervention for Children
The goal of this within groups clinical trial is to determine the feasibility of a home-based vestibular balance therapy program for children with vestibular hypofunction.
- Conditions
- Vestibulocochlear Nerve Diseases, Vestibular Disorder, Bilateral Vestibular Loss
- Trial name
- VBT-C (NCT05741515)
- Testing
- Vestibular Balance Therapy
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- University of Alabama at Birmingham
Corneal Ulcer, Eye Infections, Fungal
The Mycotic Ulcer Treatment Trial II: A Randomized Trial Comparing Oral Voriconazole vs Placebo
The purpose of this study is to determine if the addition of oral voriconazole to topical treatment regimens results in lower rates of perforation in severe fungal corneal ulcers.
- Trial name
- MUTTII (NCT00997035)
- Testing
- Voriconazole
- Where
- 7 sites in United States, India and 1 more
- Volunteers
- 240 people
- Sponsor
- University of California, San Francisco
Visual Suppression, Amblyopia
Autostereoscopic Dynamic Near Vision Testing
This is an analysis of tests of near vision. Visual perception testing using a novel program on an interactive three dimensional electronic device: Autostereoscopic dynamic near games for monocular visual acuity, stereopsis and…
- Conditions
- Visual Suppression, Amblyopia, Color Vision Defects
- Trial name
- PDICheck (NCT04606355)
- Testing
- Visual Acuity, stereopsis, Color vision
- Where
- United States
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Alaska Blind Child Discovery
Visual Acuity, Astigmatism
LFR-260 vs Traditional Phoropter in Visual Acuity Testing
The purpose of this study is to establish if LFR-260 (investigational device) is not inferior in effectiveness to a traditional phoropter (control device) when applied in visual acuity test in subjects undergoing a full routine…
- Conditions
- Visual Acuity, Astigmatism, Anisometropia
- Trial name
- NCT05259163
- Testing
- LFR-260 portable phoropter, Traditional phoropter (SOC)
- Where
- 2 sites in United States
- Volunteers
- 112 people, healthy volunteers welcome
- Sponsor
- Evolution Optiks Limited
Retinal Detachment
Correlation Between OCT and mFERG Findings With VA After Vitrectomy Surgery for Retinal Detachment
Correlation between optical coherence tomography and multifocal electroretinogram findings with visual acuity after vitrectomy surgery for Retinal detachment.
- Trial name
- NCT05993208
- Testing
- optical coherence tomography,multifocal electroretinogram. VA measurment
- Where
- Egypt
- Volunteers
- 40 people
- Sponsor
- New Valley University
Amblyopia
Evaluation of Amblyopia Protocols Using a Dichoptic Gabor Videogame Program
Interest in developing alternative methods for the treatment of amblyopia (lazy eye) has long been a topic of interest among clinicians and researchers.
- Trial name
- NCT06150391
- Testing
- Visionary: computer exercises using dichoptic Gabor Patches and band-filtered noise masks, Patching
- Where
- Spain
- Volunteers
- 125 people
- Sponsor
- Hospital de Merida