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Tuesday, December 10, 2002The physicist, Dr. Joshua Silver, calls them adaptive glasses. Their lenses are filled with silicone oil and form a chamber bounded by polyester film. Turning a knob on a small frame-mounted pump changes the amount of oil in the lens, altering the curvature of the lenses and, therefore, the power of the glasses. Users adjust the oil levels on each side until they can see clearly, a process that takes about 30 seconds. The glasses do not correct astigmatism, but they are effective against nearsightedness and farsightedness. Citing W.H.O. data, Dr. Silver estimates that all but about 15 percent of potential patients can be treated with his glasses. And they only cost $10! posted by Sydney on 12/10/2002 07:04:00 AM 0 comments 0 Comments: |
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