This study investigates the utility of vision screening using an iPad to measure interocular brightness disparity (retinal rivalry) for detecting amblyopia in paediatric populations. Polarised glasses were used to separate binocular stimuli with an interactive video programme. This was a prospective observational study of 49 children aged 3–12 years (mean 8.15 years). Group 1 included children aged 3–5 years, group 2 aged 6–9, and group 3 aged 10–17 years. The interactive game involved forced choice of the brightest of 2 pairs of images in increments until equal brightness was detected. Mean game time was 108 seconds. Interocular disparity >0.3 log units indicated relative afferent brightness sense defect. Detection of unilateral amblyopia with the game showed sensitivity of 88% and specificity of 95%. Limitations of this study include low numbers across the different age groups and no consideration of bilateral amblyopia. The authors conclude this game protocol shows potential for use as a screening tool for detection of amblyopia; This may be helpful for younger age screening – being gamified on an iPad.
iPad game for screening of amblyopia
Reviewed by Fiona Rowe
Mobile graphic device vision screening for unilateral amblyopia in pediatric patients.
CONTRIBUTOR
Fiona Rowe (Prof)
Institute of Population Health, University of Liverpool, UK.
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