Age related macular degeneration also known as AMD, is the leading cause of vision loss in people over 60. It is an eye disease that blurs the sharp, central vision you need for activities such as, driving, reading, or writing. This happens when the small central portion of the retina, known as the macula, deteriorates affecting fine detail. For some, AMD advances so slowly, vision loss does not occur for a very long time. In others, the disease advances quickly, and can lead to severe vision loss in one or both eyes.