DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Scarred eye. Scar on the conjunctiva (the outer eye membrane) of a 51-year- old woman's eye. This scar, seen as cloudy patches on the iris (the coloured part of the eye, brown), was caused by long-term use of hard contact lenses and possible infections.
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