Farsightedness (Hyperopia) is the result of the visual image being focused behind the retina rather than directly on it. It may be caused by the eyeball being too small or the focusing power being too weak.

Age related macular degeneration is one of the leading causes of blindness in the United States. It is a medical condition which affects older adults that results in a loss of vision in the center of the visual field because of damage to the retina.