Thesis Background
Visual impairment is classified as a type of impairment where the patient loses or has a decreased ability to see so much so that normal aids like glasses or lens are no longer helpful the person. There can be many causes to this such as disease, trauma, degenerative conditions etc. According to the American Medical Association, impairment is classifies as: the loss of one eye equals 25% visual impairment and a 24% impairment of the entire body; total blindness in both eyes is considered to be 100% visual impairment and 85% impairment of the body. In USA, visual impairment is further classified ...
