The retina is a light-sensitive layer that covers the interior surface of the back of the eye.  Photosensitive cells, called rods and cones, convert light energy into signals that are carried to the brain by the optic nerve.  In the middle of the retina is a small dimple called the fovea centralis, the center of the eyes’ sharpest vision and the location of most color perception.

A retinal detachment occurs when the retina is pulled away from its normal position.  The retina does not function when detached and vision is blurred, similar to film loose inside a camera.  A retinal detachment is a very serious problem that, if left untreated, will usually cause severe loss of vision.  In most cases, the retina can be surgically reattached in its original position.