Vision is more than the limited concept of sight measured in terms of visual acuity.
Vision is the process of deriving meaning from what is seen. Optometric vision therapy, also referred to as visual training or orthoptics, is a treatment regimen to correct or improve specific dysfunctions of the visual system identified by standardized diagnostic criteria. The medical necessity for optometric vision therapy is determined from a comprehensive analysis and diagnosis of the functioning of the visual system. Treatment plans are directed at the specific diagnosed dysfunctions and encompass the use of lenses, prisms and patching among others. Because the therapy is individualized, the procedures used and the duration of therapy are dependent upon the nature and severity of the problem being treated and the specific needs of the patient.