Word: eye
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Dates: during 1990-1999
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...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...
...Food and Drug Administration recently approved the invention, called the Boston Scleral Lens, making it legal for distribution to eye doctors around the country...
...cornea is the transparent membrane that covers the iris--the colored part of the eye--and the pupil. Occasionally, it becomes scraped, cut or dried out, which may lead to partial or complete loss of vision andoften causes pain...
...lens, which costs $2,500, rests on thesclera--the white part of the eye--and arches overthe cornea, creating a tiny...
Patients fill the lens--which is about the sizeof a quarter--with a lubricant, which in turnfills the space between the lens and the eye,providing lubrication to the irritated cornea andallowing the patient to see normally...