Method for correcting refractive disorders
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United States of America Patent
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Sep 20, 1994
Issued Date -
N/A
app pub date -
Mar 23, 1993
filing date -
Apr 21, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for changing the shape of the cornea of an eye to correct refractive disorders comprises employing laser radiation having a selected wavelength, beam pattern, and beam power profile, and employing this radiation for a selected time duration, wherein the wavelength, beam pattern, beam power profile and time duration are chosen to selectively kill or injure keratocytes and to avoid shrinking the collagen in a selected treatment volume of the cornea which has a posterior boundary which is at least 10% of the total stromal depth, and preferably between 50-90% of the stromal depth.
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