BSIP, LAURENT / SCIENCE PHOTO LIBRARY BSIP, LAURENT / SCIENCE PHOTO LIBRARY
Corneal transplant. Surgeon preparing a donated cornea for transplantation. The cornea is the thick bulge at the front of the eye. It is responsible for much of the focusing of light done by the eye, the remainder being done by the lens. The operation is performed when a patient's cornea becomes damaged.
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