Age-related macular degeneration (AMD) is a leading cause of vision loss among people age 50 and older.AMD is a disease of eye in which macula of eye is deteriorated. The macula is the part of the retina that is responsible for central vision, allowing tosee fine details clearly and sharply, any disorder as is the case of AMD causes blurring of central vision. Over time, the blurred area grows larger prompting the growth of blank spots in your central vision. Objects also appear to seem less bright as they used to be before AMD.