Blindness as it relates to Cataracts, Glaucoma, Macular Degeneration, and Diabetic Retinopathy focusing on the causes, effects, treatments, and assistive technology.

Blindness
There are approximately 10 to 11 million blind and visually impaired people in North America, and their visual abilities vary almost as much as their ethnic, racial, and personal characteristics do. The term visual impairment covers a wide range and variety of vision, from blindness and lack of usable sight, to low vision (Friedman & Tielsch, 2002). Every seven minutes, someone in America becomes blind or visually impaired. Persons who are visually impaired pursue a great range of interests and careers and participate in full daily activities. They may need to receive training in various adaptive techniques, in order to do so there are services and products that are available for this purpose (Hollins, 1989). Visual i...