GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY
Trabeculectomy. Surgeon performs a trabeculectomy, an operation to reduce press- ure in the eye of a patient with glaucoma. The surgeon is watching the procedure using a binocular microscope. A second surgeon (at left) is assisting with surgical equipment. Glaucoma is caused by fluid build up in the eyeball. A trabeculectomy creates an outlet for this fluid, thus reducing pressure. The mucous membrane covering the front of the eyeball (the conjunctiva) is opened and a half thickness of the white of the eye (the sclera) is cut and folded forward. A connection is made into the front chamber of the eye to act as a fluid outlet.
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