AMD (Age-Related Macular Degeneration) is a chronic disease that involves the deterioration of the macula or the center of the retina. This can lead to central vision loss. AMD is the most common cause of vision loss in patients over the age of 55. In the early stages, there may no vision changes. In more advanced stages, vision can become blurred or distorted. Localized blind spots can occur in central vision. Peripheral or side vision is not affected. With early detection and new treatment options, doctors can now maintain visual acuity in most patients.