Mascular degenerations does not cause total blindness. Macular degeneration affects the center of the retina in the back of the eye, which is called the macula. In essence, the support system underneath the retina wears out. As a result, the overlying retina begins to lose its capacity to see well. The center of the field of vision is affected in one or both eyes. Most people with Macular Degeneration do retain some peripheral vision, and they learn to optimize the use of their remaining vision. Each case differs. However, many will be classified as legally blind. Legally blind individuals are those whose best visual sharpness or acuity is 20/200 or worse in their better eye; or whose visual field, regardless of acuity, is restricted to a 20 degree diameter.Although macular degeneration is a serious condition, it doesn't cause total blindness. The majority of people diagnosed with this condition have slow, progressive degeneration, which we call dry macular degeneration. Many have good vision throughout their lives and experience only subtle, mild changes.