Age-Related Macular Degeneration
Macular Degeneration
Age-related macular degeneration (AMD) is the leading cause of blindness in the United States. It is a common condition among people ages 50 years and older and affects approximately 11 million people in the United States. The incidence of AMD increases with each decade over age 50.
AMD affects the macula, the central portion of the retina, which is the light-sensing nerve tissue that lines the inside of the back of the eye. The retina, along with the optic nerve and brain, transforms and processes light into visual images.
Many people with AMD have minimal visual symptoms and may retain good vision. A small percentage of those with AMD will lose central vision, which may impair their ability to perform activities such as reading and driving.
The two major types of AMD are dry and wet.