Combined with the information the doctor gathers during the clinical exam, these tests help us make decisions about treatment. The Brock String is a simple tool which gives the child a great deal of visual feedback. It teaches the patient how to aim her eyes together correctly for varying distances in space and allows her to experience the difference between convergent and divergent eye aims. It also allows the child to determine if she is shutting off an eye, or suppressing. This is usually one of the first techniques the child is taught and is often assigned as home therapy.
Computers are an important part of vision therapy treatment.
Orthoptic software can create a wide range of visual stimuli and affords the variability to individualize techniques to meet each child's specific needs. The child can work on programs which train eye movements, eye coordination, stereo vision, and antisuppression techniques. Therapy always begins at a level where the patient can succeed and gradually increases the visual demands to stretch his range and skill. This patient is working on a diagnostic and training machine called a cheiroscope. It's used to assess binocular stability and alignment and to detect the presence and extent of suppression.