Age-related macular degeneration (AMD) is the most common cause of visual loss in Americans above 55 years of age. It affects more than 10 million Americans. AMD is a chronic disease marked by the deterioration of the central portion of the retina and therefore results in central visual loss. Macular degeneration occurs more commonly in Caucasians, smokers, and those with a positive family history of macular degeneration. There are two main types of macular degeneration, dry and wet macular degeneration. The dry form is more common. Treatment includes anti-oxidant vitamins and supplements. The wet form involves leaking blood vessels underneath the retina; treatment involves injections or laser.