Amblyopia or lazy eye occurs when vision in one or both eye is poor due to various childhood causes, such as unequal or high spectacle power, squint or vision blocking pathologies such as cataract or ptosis. Even after the basic pathology has been treated, the eye sees less as communication between the eye and brain has not been developed to the full extent, and so special efforts are required to make the lazy eye work.
Till now the gold standard therapy has been occlusion or patching of the good eye. Though it has good results, it has some drawbacks like problem with compliance, it stimulates only monocular (one eye) vision and shows efficacy only in children.
Pediatric Ophthalmologists are now turning towards a newer avenue called dichoptic vision therapy, where both eyes are simultaneously and separately stimulated. Bynocs is one such form of dichoptic therapy, where sessions are given in the form of video games, which the child has to play. Each session lasts for half an hour and about 20 such sessions are required. Once the child and parents are comfortable with the software, home based therapy can also be given. The therapy is more acceptable to children than patching. It is showing promising results both in children and adults.