Vision therapy is a type of eye training that is doctor supervised, non-surgical and customized program of visual activities designed to correct certain vision problems and/ or improve visual skills. The aim of vision therapy is to teach the visual system to correct itself.
Vision therapy is performed to improve vision skills like eye movement control, eye coordination and perception. It is an attempt to develop or improve visual skills, abilities and improve the visual comfort, ease and efficiency.
It is a type of physical therapy for the eyes and brain and is a highly effective non-surgical treatment for many common visual problems. It also includes the use of devices like optical lenses and prisms. In addition, one can perform computer assisted visual activities. Other devices like balance boards, metronomes and non-computerized visual instruments can also play an important role in the customized vision therapy program.
Usually vision therapy is used to treat vision problems that cannot be treated successfully with eye glasses, contact lens and / or surgery alone and to achieve clear, comfortable, binocular vision.
The human brain has a significant amount of neuroplasticity and can change its structure and function in response to external stimuli. These changes initially were thought to occur only in children, but now can occur in adults also. Properly devised and administered vision therapy can cause neurological changes that can correct vision problems and improve visual performance.
Problems that vision therapy can correct include
There are many tools that can be used and include accommodative flippers, Hart chart, life saver circle cards, Brock string and eccentric circle card, cat card, barrel card, door saccades, letter pyramids, number pyramids, accommodative flippers and Kirshner arrows.
Commonly five features are improved with vision therapy – accommodative facility, divergence, convergence, oculomotor control and visuomotor integration.
This is generally conducted in once or twice weekly sessions of 30 minutes and home based therapy is given to be performed at home.
To help improve the visual comfort and efficiency, to improve basic visual skills and improve the interpretation of visual information.