Binocular treatment of amblyopia using videogames (BRAVO): study protocol for a randomised controlled trial.
Cindy X Guo, Raiju J Babu, Joanna M Black...
https://pubmed.ncbi.nlm.nih.gov/27756405/Actively Recruiting
Led by Universidad Autonoma de Nuevo Leon · Updated on 2026-05-06
60
Participants Needed
1
Research Sites
8 weeks
Total Duration
Amblyopia, also known as lazy eye, is a condition where one or both eyes have reduced vision that cannot be explained by an eye abnormality alone. It causes problems with contrast perception, movement detection, visual sharpness, focusing, and depth perception. Traditionally, treatment involves patching the stronger eye for two hours daily, but this can have compliance issues and vision often regresses after stopping treatment. Recent research suggests amblyopia may involve both eyes due to changes in brain visual pathways, leading to new binocular treatments that aim to improve vision in the lazy eye and restore depth perception. This study compares three treatment methods in children with amblyopia aged 4 to 10 years Group A uses an eye patch on the stronger eye with near-vision activities like reading and drawing Group B uses an eye patch on the stronger eye combined with an electronic tablet Group C uses red-green glasses with an electronic tablet. Each group receives their assigned treatment for two hours every day over four months, followed by a two-month break to assess if vision problems return. Participants will have their vision and depth perception tested at the start, monthly during treatment, and two months after stopping treatment to check for relapse. The study will measure the best corrected visual acuity in the lazy eye and stereopsis at these times. The trial is double-blind and randomized, aiming to find which treatment helps improve vision and binocular function the most. The total involvement lasts about six months, including treatment and follow-up evaluations.
CONDITIONS
Binocular Visual Therapy and Video Games for Amblyopia Treatment.
M
Marissa L. Fernandez-de Luna, MD
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Universidad Autonoma de Nuevo Leon
Lead Sponsor
Hospital Universitario Dr. Jose E. Gonzalez
Collaborating Sponsor
You may qualify if you...
You will not qualify if you...
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - 4 months
Participants receive binocular visual therapy or eye patch treatment daily for 2 hours over 4 months using red/green glasses, electronic tablets, or near-vision activities depending on group assignment.
Monthly visits for 4 months
Duration - 2 months
Participants suspend therapy for 2 months and are reevaluated to assess for lazy eye relapses and improvements in vision.
1 visit (in-person)
Study Type
INTERVENTIONAL
Masking
DOUBLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
3
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https://pubmed.ncbi.nlm.nih.gov/16540485/Universidad Autonoma de Nuevo Leon
Lead Sponsor
Hospital Universitario Dr. Jose E. Gonzalez
Collaborating Sponsor