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Star Wars technology in the eye clinic.

Half the world's population has simple vision problems--nearsightedness, fa astigmatism--caused solely by changes in the shape of the cornea, the curved out eye that, together with the lens inside the eye, focuses light on the retina. Ey lenses are used to correct the problem, but if the cornea could be permanently r bothersome devices would no longer be necessary.

Early in the 1980's a procedure known as radial keratotomy was developed in The surface of the cornea is flattened by cutting a series of tiny slits in a ra into proper shape. Although the procedure enjoyed brief popularity in the United longer in favor here. Now the marvel of laser surgery is being used to reshape t new type of laser beam that permits removal of corneal tissue with great precisi is corrected by flattening the corneal surface; farsightedness is corrected by r material around the middle to increase its curvature--and the entire procedure c an hour on an outpatient basis.

Although still viewed as an experimental procedure--and with some skepticism ophthalmologists--the results have been encouraging. Persons with nearsightednes perfect vision, and it is anticipated by its proponents that laser reshaping of eventually eliminate the need for glasses or contact lenses for millions of peop
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Title Annotation:permanent correction for nearsightedness, etc.
Publication:Medical Update
Date:Nov 1, 1989
Words:205
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