Word: lensed
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A Harvard professor at the Medical School (HMS) said yesterday that he has invented a new contact lens which enables people with severe corneal damage to see clearly.
The lens is made from a new plastic called Equalens II, which allows oxygen to diffuse freely across the lens into the eye. The cornea needs oxygen for the eye to function properly.
Dr. Perry Rosenthal, assistant clinical professor of ophthalmology at HMS and an eye surgeon, says his lens has worked in about 80 percent of test cases.
The U.S. Food and Drug Administration recently approved the invention, called the Boston Scleral Lens, making it legal for distribution to eye doctors around the country.
The new lens, which costs $2,500, rests on thesclera--the white part of the eye--and arches overthe cornea, creating a tiny gap.