Macular degeneration is diagnosed as either dry (non-neovascular) or wet (neovascular). Neovascular refers to growth of new blood vessels in an area, such as the macula, where they are not supposed to be. The dry form is more common than the wet, with about 85%-90% patients diagnosed. The wet form of the disease usually leads to more serious vision loss. Different forms of macular degeneration may occur in younger patients. These non-age related cases may be linked to heredity, diabetes, nutritional deficits, head injury, infection, or other factors. This book presents the latest research from around the world.