In 1981, Rangaswamy Srinivasan working at IBM Research Lab discovered that an ultraviolet excimer laser could etch living tissue in a precise way with no thermal damage to the surrounding area. He named the phenomenon Ablative Photodecomposition (APD). Srinivasan and his co-inventors ran tests using the excimer laser and a conventional, green laser to etch organic matter. They discovered that while the green laser produced rough incisions, damaged by charring from the heat, the excimer laser produced clean, neat incisions. In 1983, Srinivasan worked with an ophthalmic surgeon to develop APD to etch the cornea.
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20th Century Inventions 1951 to 1975 History Time Line
Davis. Charles Ginsburg invented the first videotape recorder (VTR). 1952: Mr. Potato Head patented. ... 1975: The laser printer invented. The push-through tab on a drink can invented.
Some clients develop debilitating visual symptoms. Certain people develop glare, halos, or double vision that may seriously affect night eye-sight. Even with excellent eyesight on the sight chart, some people do not see as well in situations of low contrast, such as at night or in fog, after procedure as compared to before surgery.
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Laser Eye Risks
Results are generally not as good in clients with very large refractive errors of any type. You should discuss your worries with your doctor and realize that you might still require glasses or contacts after the procedure.
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