A detached retina is a condition in which part or all of the retina-the thin, delicate layer of nerve cells lining the back of the eyeball-breaks free from the back of the eye and floats inside the eyeball. A detached retina can cause vision problems and blindness.
A retina can detach as a result of an eye injury, inflammation, aging, and some diseases such as diabetes. Surgery can often repair a detached retina and help a person regain normal eyesight.
WebMD Medical Reference from Healthwise