PAUL PARKER / SCIENCE PHOTO LIBRARY PAUL PARKER / SCIENCE PHOTO LIBRARY
Detached retina. Ophthalmoscope view of the inner eye, showing a detached retina. At top is the normal fixed retina coloured orange; at lower frame (grey) the retina has peeled away and separated from the choroid, the layer of the eyeball it is normally attached to. Detachment of the retina can occur spontaneously, or as a result of injury or disease (diabetes and sickle cell anaemia). Retinal detachment is usually due to a tear in the retina, causing fluid to accumulate behind the retina and lifting it up. Although painless, the condition results in a black drape falling across the patient's vision. Laser treat- ment normally restores the patient's vision.
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