Physical changes are a normal byproduct of aging. Gray hairs and less elastic skin that contributes to wrinkles may be among the more notable physical signs of aging, but older individuals also may note their vision is not what it once was. Diminished vision can be a byproduct of various conditions. Aging individuals who have noticed a loss of vision may be dealing with age-related macular degeneration, or AMD. Seniors concerned by AMD can learn about the condition so they’re well-positioned to manage it if and when they need to. What is AMD? The National Eye Institute notes that AMD is an eye disease that is the leading cause of vision loss for older adults. In fact, Johns Hopkins Medicine notes age is the most common cause of severe loss of eyesight among people 50 and older. The NEI notes that aging causes damage to the macula, which is the part of the eye that controls sharp, straight-ahead vision. When a person has AMD, his or her central vision is blurred. What happens when…