Presbyopia correction program
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United States of America Patent
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Jun 4, 2013
Grant Date -
Aug 4, 2011
app pub date -
Mar 28, 2011
filing date -
Aug 19, 2005
priority date (Note) -
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Abstract
Systems and methods for treating presbyopia are provided. In one embodiment, a system for photorefractive treatment of presbyopia includes a laser source configured for ablating corneal tissue and a control system in communication with the laser source and configured to control the laser source to ablate conical tissue of a patient to achieve a desired corneal shape. In some instances, the control system controls the laser source by calculating a global optimum regarding curvature and asphericity of the cornea. In some instances, control system controls the laser source by calculating a central steep island and calculating a curvature and asphericity for the rest of the cornea. In some embodiments, a laser source is controlled to ablate the cornea of the patient in accordance with a calculated shape profile to achieve a desired corneal shape.
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