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At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care.

The retina is a thin layer of tissue on the inside back wall of your eye. It contains millions of light-sensitive cells and other nerve cells that receive and organize visual information. Your retina sends this information to your brain through your optic nerve, enabling you to see.

Retinal diseases can affect any part of your retina and can cause total blindness. Disease affecting the edge of your retina can affect your side (peripheral) vision. Some diseases affect the part of your retina that serves your central vision (the macula and the fovea). Many retinal diseases share some common symptoms and treatments. The main goals of treatment are to stop or slow the disease and preserve, improve or restore your vision.

Source: http://www.mayoclinic.com