The retina is a layer of tissue in the back of your eye that senses light, sends
images to your brain and gives you the ability to see. Damage or disease in a retina can affect your vision, and some can be serious enough to cause blindness. Retinal damage or disease are associated with aging, accident, diabetes, high blood pressure, premature birth, family history and some medications used; for example Steriods and Chloroquine.
To maintain a lifetime of healthy vision, eye doctor recommends a comprehensive annual eye exams. People with special risks, may need an eye exam more frequently. But if you have symptoms of eye trouble you should see an eye doctor right away.