Reflectometry/interferometry system and method for corneal plane positioning
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United States of America Patent
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Jun 7, 2011
Grant Date -
Nov 4, 2010
app pub date -
Nov 5, 2009
filing date -
Mar 6, 2007
priority date (Note) -
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Abstract
A system for positioning an eye of a patient, for example, for laser ophthalmic surgery includes a reflectometer adapted to receive as input a reflected beam from an anterior surface of a cornea of an eye of a patient. The interferometer is calibratable to a desired position of the corneal anterior surface. A comparator is in signal communication with the interferometer and is adapted to calculate from the input a difference between an actual position and the desired position of the corneal anterior surface. A device is in signal communication with the comparator for moving the patient a distance in a direction for matching the actual position to the desired position of the corneal anterior surface.
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