This study evaluated the effectiveness of dichoptic amblyopia treatment using the Bynocs AmblyGo programme in reversing various types of amblyopia in a retrospective cohort. At recruitment, all patients had demonstration of the treatment. Patients continued treatment at home via internet-connected devices with guidance of an optometrist using Zoom video calls. Each had a minimum of five weekly one-hour sessions. The study involved 59 patients (74 eyes); 53% female. Six were aged <6 years; 21 aged 7–10; 28 aged 11–19; and four aged >20 years. Median age was 11 years (range 5–30). Thirty-four had anisometropic amblyopia, 12 with ametropic amblyopia, 10 strabismus amblyopia and three with deprivation amblyopia. Residual amblyopia after prior occlusion was present for 36 patients. For those 36 patients, best corrected visual acuity pre occlusion was 0.45logMAR median improving slightly to 0.40 after occlusion (and pre dichoptic treatment) and improving to 0.20logMAR after dichoptic treatment; a significant improvement, with main effect for anisometropic amblyopia cases. The average number of treatment sessions was 77 over 11 weeks. Of 74 eyes, 82.4% had improvement of visual acuity. Improvement also was seen for binocular single vision at near and distance fixation; 69% had improved stereopsis. Limitations of this study were its retrospective study design and no control group
Improvement of visual acuity with dichoptic training for amblyopia
Reviewed by Fiona Rowe
Effectiveness of dichoptic therapy for treating mild to moderate amblyopia in a tertiary eye care center in South India.
CONTRIBUTOR
Fiona Rowe (Prof)
Institute of Population Health, University of Liverpool, UK.
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