Optical feedback system for vision correction
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United States of America Patent
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Sep 21, 2004
Issued Date -
N/A
app pub date -
May 28, 2002
filing date -
Dec 23, 1999
priority date (Note) -
In Force
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Abstract
The invention provides laser eye surgery devices, systems, and methods which measure the refractive error in the eye before, during, and/or after vision correction surgery. The invention allows adjustments during the vision correction operation, and allows qualitative and/or quantitative measurements of the progress of photorefractive treatments by projecting and imaging reference images though the cornea and other components of the ocular optical system. A slope of an image quality value such as an Optical Transfer Function may be monitored during the procedure to help determine when to terminate treatment.
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