What is age-related macular degeneration and how can one avoid it?

There are two types of age-related macular degeneration (AMD), dry AMD and wet AMD. Most people with the dry type will have a slow loss of vision. If it converts to the wet type, the time to potential blindness is faster. People with a history of smoking are more likely to develop AMD. If you don't smoke, don't start. If you do smoke, try to quit. Some (but not all) evidence suggests that a diet rich in green leafy vegetables, fruits, fish and nuts may reduce the risk of AMD.