The leading cause of vision loss among Americans 60 years of age and older is macular degeneration. It affects 11 million people in the United States, and that number is expected to double by 2050. The disease affects the small central portion of your retina, known as the macula. This portion of your eye is responsible for our sharp, central vision. It helps us read, recognize faces, drive, and more. In macular degeneration, this spot deteriorates and leads to irreversible destruction that could dramatically change your life as you age.