Doctor's Notes on Macular Degeneration
Macular degeneration (also termed age-related macular degeneration or AMD) is a disease that affects the macula (central portion of the retina in the eye). Signs and symptoms of the disease are blurred or partial loss of vision (usually central vision), straight lines appear wavy, loss of vision in dim light and objects appear smaller when viewed with one eye.
Causes of macular degeneration are age related (usually age of 55 or older) and have two types; dry form and wet form (also termed exudative or neovascular) and rarely, inherited (juvenile macular degeneration). Small, round yellow-white spots termed drusen can accumulate under the macula and cause it to thin with resulting vision loss. The wet form of AMD develops vision loss when abnormal blood vessels grow under the macula.
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Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.