Prism reading glasses reduce eye fatigue and allow for a natural, comfortable focal point. Effective for close-up work, they leave both hands free and provide the widest field of view. They are also used for treating a number of different diseases that affect the eyes including, but not limited to: macular degeneration, diabetic retinopathy, cataracts, glaucoma, diabetes, Stargardt disease, stroke or brain injuries, hemianopia and quadrantanopia, diplopia, spinal or neck injuries.