Clinical trials: Visual Acuity
Optic Neuritis
TLR-9 Antagonism in Steroid Resistant Optic Neuritis
Although idiopathic steroid resistant optic neuritis is very uncommon, there is no established treatment protocol for such patients.
- Trial name
- NCT01424735
- Testing
- Mycobacterium w.(Mw)-freeze dried extract 0.5ml
- Where
- India
- Volunteers
- 8 people
- Sponsor
- Sudhalkar Eye Hospital
Amblyopia
Will Perceptual Learning Via Video Game Playing Improve Visual Acuity Stereopsis & Fixation Stability in Mild Amblyopes?
Contrast balanced dichoptic videogame training has been found to improve sensory functions in adults with amblyopia; best corrected distance visual acuity (BCVA) and stereopsis, but its effect on motor function, namely amblyopic…
- Trial name
- NCT02995174
- Testing
- Dichoptic video game in an i-Pod touch device, Video game in an i-Pod touch device
- Where
- Hong Kong
- Volunteers
- 23 people
- Sponsor
- The Hong Kong Polytechnic University
Congenital Glaucoma
Prospective Study of the Diagnostic and Therapeutic Management of Congenital Glaucoma in France
Evidence of a relationship between age at discovery of congenital glaucoma and visual acuity at 4 years of age. The delay in diagnosis is a factor of poor visual acuity.
- Trial name
- Conglau (NCT03077789)
- Testing
- TRABECULOTOMY
- Where
- 24 sites in France
- Volunteers
- 250 people
- Sponsor
- University Hospital, Lille
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
Retinopathy of Prematurity, Myopia
Prematurity and Ophthalmological Changes
Ophthalmological differences in school-aged children with and without a history of retinopathy of prematurity
- Trial name
- NCT06452524
- Testing
- axial length (AU) and anterior chamber depth (ACD), optical coherence tomography (OCT)
- Where
- Turkey (Türkiye)
- Volunteers
- 211 people, healthy volunteers welcome
- Sponsor
- Ankara City Hospital Bilkent
Amblyopia
Children's Eye Examination and Testing At Home Study
Repeated measures observational study of tablet-based children's visual acuity tests.
- Trial name
- CHEETAH (NCT06980415)
- Testing
- Kay Pictures iSight
- Where
- United Kingdom
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- University Hospital Southampton NHS Foundation Trust
Visual Acuity
Evaluation of VisionQuest 20/20, a Visual Acuity Testing Software
This study involves the use of VisionQuest 20/20 which is a new software program to test visual acuity in children. The purpose of this study is to compare the results of VisionQuest 20/20 to two other ways to measure visual…
- Trial name
- NCT00366756
- Where
- United States
- Volunteers
- 97 people, healthy volunteers welcome
- Sponsor
- Medical University of South Carolina
Visual Acuity
Eye Health in Children and Adolescents: Repeated Cross-sectional Survey
The investigator will take a mixed-methods approach to gather relevant information from both children or adolescents, and their parents on profiles of eye health, as well as routinely available indicators.
- Trial name
- NCT04433130
- Where
- China
- Volunteers
- 300 people
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
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
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
Athlete
Effects of Oculomotor Exercises on Volleyball Players
The researcher aimed to investigate the effects of oculo-motor exercises on dynamic visual acuity, balance and performance of volleyball players whose performance can be improved with visual skills training.
- Trial name
- NCT04852549
- Testing
- Oculomotor exercise
- Where
- Turkey (Türkiye)
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Istanbul Medipol University Hospital
Anisometropic Amblyopia, Refractive Errors
Excimer Laser Surgery for Anisometropic Amblyopia
Study Objectives To compare the efficacy and safety of surgical treatment (PRK) versus non-surgical treatment of anisometropic amblyopia in children who have failed conventional treatment due to non-compliance or non-response.
- Trial name
- ATS19 (NCT03342235)
- Testing
- Photorefractive Keratectomy (PRK), Patching 2 hours per day, Excimer Laser System
- Sponsor
- Jaeb Center for Health Research
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
Macular Psudohole
Foveal Cone Outer Segment Tips Line Defect in Macular Pseudohole
Evaluation of recovery in foveal cone outer segment tips line defect and visual acuity after surgery for macular pseudohole
- Trial name
- NCT01959802
- Testing
- Vitrectomy
- Where
- Japan
- Volunteers
- 22 people
- Sponsor
- Kyorin University
Amblyopia, Binocular Vision Disorder
A Patch Free Treatment for Young Children With Amblyopia
The purpose of this study is to test whether a binocular treatment can improve vision and motor function in young children with amblyopia.
- Trial name
- NCT04086524
- Testing
- Binocular cartoon treatment at home, Patching, Binocular cartoon treatment in office
- Where
- 2 sites in United States, Australia
- Volunteers
- 34 people
- Sponsor
- University of Waterloo
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
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
Visual Acuity
To Evaluate the Visual Performance After Bilateral Implantation of Multifocal Intraocular Lenses
To evaluate the visual performance after bilateral implantation of multifocal intraocular lenses.
- Trial name
- NCT03223857
- Testing
- Femtosecond-laser-assisted lens exchange
- Where
- Germany
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University Clinic Frankfurt
Allergic Conjunctivitis
The Role of Vitamin D in Corneal Epithelial Barrier Function, Ocular Microbiome, Ocular Inflammation, and Visual Acuity of Children With Allergic Conjunctivitis
A double-blind study to evaluate the role of vitamin D in corneal epithelial barrier function, ocular microbiome, ocular inflammation, and visual acuity of children with allergic conjunctivitis.
- Trial name
- NCT05839938
- Testing
- Vitamin D
- Where
- Taiwan
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- China Medical University Hospital
Cataract
PREVAIL VII: Cataract Surgery in Ebola Survivors
Objective: Zaire ebolavirus is a single-stranded RNA virus associated with high morbidity and mortality. The most recent epidemic of Ebola virus disease (EVD) in West Africa resulted in over 11,000 deaths and disabling sequelae…
- Trial name
- NCT03309020
- Testing
- Cataract surgery
- Where
- Liberia
- Volunteers
- 37 people
- Sponsor
- National Eye Institute (NEI)