PAUL PARKER / SCIENCE PHOTO LIBRARY PAUL PARKER / SCIENCE PHOTO LIBRARY
Diabetic retinopathy. Ophthalmoscope view of the retina of the eye in a diabetic patient showing retinopathy. Here, the retina is partially covered over in fatty exudates and fibrous tissue; normal retina is orange (at right). Diabetic retinopathy describes the damage to the blood supply of the retina that occurs as a complication of diabetes. Blood haemorrhages or tiny aneurysms (balloon-like swellings) affect blood vessels, with reduced blood flow. Increased permeability of the blood vessels may also produce white fatty exudates, as seen here, and growth of fibrous tissue into the vitreous humour of the eye. Retinopathy impairs sight and in severe cases leads to blindness.
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