Clinical trials: Visual Acuity, open to volunteers
Presbyopia
Luminous Efficiency Function V(λ)' of Patients That Underwent Pseudophakic Presbyopic Corrections With EDOF IOLs
Primary objective of this study is to introduce a modified luminous efficiency function that addresses the distinct total eye light transmittance of patients who underwent pseudophakic presbyopic correction with extended-depth of…
- Trial name
- V(λ)'_EDOF (NCT07077967)
- Testing
- Phacoemulsification with EDOF IOLs
- Where
- Greece
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Democritus University of Thrace
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
- Augelux Therapeutics
Visual Acuity, Refractive Errors
Assessing the Turkish DDIVAT for Visual Acuity Measurement
The goal of this observational methodological study is to validate the Turkish version of the DDIVAT visual acuity measuring device in a Turkish-speaking adult population.
- Conditions
- Visual Acuity, Refractive Errors, Myopia, Hyperopia
- Trial name
- NCT07240480
- Testing
- DDIVAT Visual Acuity Test (Turkish Version)
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Trakya University
Vestibular Hypofunction
Improving Psychological and Vestibular Health: MINDGAPS
The purpose of this study is twofold: 1) Develop norms for measures of inner ear function and psychological health, and 2) Examine the feasibility of using the MINDGAPS system (a remote monitoring system) to track progress during…
- Trial name
- MINDGAPS (NCT05986279)
- Testing
- Rehab
- Where
- 2 sites in United States
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- University of Montana
Macular Degeneration, Geographic Atrophy
A Prospective Observational Study to Assess the Reliability and Validity of the MLSDT
The goal of this observational study is to assess the reliability and validity of the 9-object MLSDT for evaluation of participants with moderate to severe vision impairment when tested without a wearable low-vision magnifying…
- Conditions
- Macular Degeneration, Geographic Atrophy, Stargardt Disease
- Trial name
- NCT06805474
- Testing
- Observational
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Nanoscope Therapeutics Inc.
Ametropia, Myopia; Refractive Error
The Objective of This Study is to Evaluate the Perfomance of a Photorefraction Device for Screening Ametropia in Children. Eligible Participants Will Undergo Multiple Refractive Error Measurements, Visual Acuity and Strabismus Assessments During a Single Evaluation Visit.
The goal of this clinical trial is to evaluate the performance of a photorefraction screener in terms of sensibility, sensitivity and accuracy on children aged 3 to 8 y.o.
- Conditions
- Ametropia, Myopia; Refractive Error, Myopia; Astigmatism
- Trial name
- NCT06882408
- Testing
- Photorefraction device under investigation, Comparator device, Tabletop auto-refractometer, Comparator device, portable photorefraction device
- Where
- 2 sites in France
- Volunteers
- 315 people, healthy volunteers welcome
- Sponsor
- Essilor International
Data Collecting
Prediction of Postoperative Visual Acuity in Cataract Patients Using a Macular Optical Coherence Tomography-based Deep Learning Method
The purpose of this study is to collect the macular OCT images and preoperative and postoperative visual acuity of cataract patients who had been operated in the eye center of the Second Affiliated Hospital of Zhejiang University…
- Trial name
- NCT04887909
- Where
- China
- Volunteers
- 1,100 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
Ophthalmic Disorders
Co-designing and Evaluating a Real-world Implementation Model for Remote Consultation with Vision Self-testing.
This study aims to involve the public, patients and National Health Service (NHS) staff in co-designing a scalable, inclusive and sustainable implementation model for ophthalmic remote consultation with vision self-testing (the…
- Trial name
- ReVise (NCT05941182)
- Testing
- online questionnaires
- Where
- 2 sites in United Kingdom
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Cambridge University Hospitals NHS Foundation Trust
Ophthalmopathy
Assessing Agreement Between Acuvera Capture and Paper-Based Methods for BCVA Data Recording in Ophthalmic Trials
Study Purpose: To evaluate the level of agreement between the Acuvera Capture application and traditional paper-based methods for recording Best Corrected Visual Acuity (BCVA) in ophthalmic clinical trials.
- Trial name
- VALiCAPTURE (NCT07613580)
- Where
- 2 sites in Portugal
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- OptymEdge, LLC
Monochromatic, L- and S-cone Modulation Only
Evaluating How Well Different Types of Light-sensitive Cells in the Eye Contribute to Its Focusing Ability
In this experiment, subjects will view shapes on a screen with varying colors and be asked to focus their eyes on the shapes. The shapes will look as though they are jumping to random distances away from the eye.
- Conditions
- Monochromatic, L- and S-cone Modulation Only, L- and M-cone Modulation Only, M and S-cone Modulation Only
- Trial name
- NCT07691463
- Testing
- Color
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Rochester Institute of Technology
Visual Acuity
Exploration Strategies in Night Vision Sensors
The main objective of this clinical trial is to identify a variation in visual strategy characterized by both head movements and eye movements of healthy volunteers during a target detection task when images simulating night…
- Trial name
- STRAT-JVN (NCT07352904)
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Direction Centrale du Service de Santé des Armées
Retinopathy of Prematurity
Retinal Microanatomy in Retinopathy of Prematurity (BabySTEPS2)
Retinopathy of prematurity (ROP) is a disorder of development of the neural retina and its vasculature that can impact vision in vulnerable preterm neonates for a lifetime.
- Trial name
- BabySTEPS2 (NCT04995341)
- Testing
- Investigational ultracompact OCT and OCTA system, retinal photographs
- Where
- 2 sites in United States
- Volunteers
- 236 people, healthy volunteers welcome
- Sponsor
- Duke University
Visual Acuity
Evaluation of a Digital Visual Acuity Device vs. Standard Visual Acuity Measurements
The purpose of this research is to validate and determine the accuracy of the experimental device when measuring visual acuity versus our standard visual acuity measurements and to gather voice recordings of letters to help build…
- Trial name
- NCT06431295
- Testing
- FaceScan
- Where
- United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Visual Acuity
Comparison of ACUVUE® OASYS MAX 1-Day Multifocal and DAILIES® AquaComfort Plus® Multifocal
This study is a 4-visit, multi-site, prospective, controlled, randomized, single-masked (subjects), two-arm parallel group, bilateral, dispensing clinical trial to compare the performance of the Test lens to the Control lens in…
- Trial name
- NCT07788521
- Testing
- Senofilcon A, Nelfilcon A
- Where
- 11 sites in United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Presbyopia
Volumetric Visual Fields at Intermediate and Near Distances in Presbyopic Patients Using Occupational and General-Purpose Progressive Addition Lenses
This single-center, randomized, double-blind, crossover clinical trial aims to compare the volumetric visual fields provided by two occupational progressive addition lenses (OPLs) optimized for intermediate and near vision in…
- Trial name
- CIVIUS2025PAL (NCT07617090)
- Testing
- OPAL PC assesment, OPAL Office assessment, PAL assesment
- Where
- 2 sites in Spain
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- University of Seville
Vision Screening
Validation of DDIVAT Digital Optotypes for Distance Visual Acuity Testing Among the Bulgarian Population
To compare distance visual acuity in Bulgarian patients over 18 years of age using two different methods - the Snellen method and the DIDIVAT digital online optotypes.
- Trial name
- NCT07208838
- Testing
- To test visual acuity in 150 Bulgarian patients over 18 years of age using Snellens visual acuity chart and DDIVAT optotypes
- Where
- Bulgaria
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Plovdiv Medical University