Determining a target optical zone for ablation based on stiles-crawford effect
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United States of America Patent
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Issued Date -
Jan 30, 2003
app pub date -
Jul 30, 2002
filing date -
Jul 30, 2001
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Abandoned
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Abstract
The optimal optical zone for a patient is determined based upon the Stiles-Crawford effect and patient-specific scotopic pupil parameters. This invention is especially useful in refractive surgery where the chosen optical zone is crucial and affects both the depth and volume of the ablation. This optimal optical zone may be used in the creation of corrective lenses and other ocular surgery in addition to refractive surgery. Provided with the optimal optical zone, a refractive surgeon may better choose the surgical parameters for the treatment. Current methods consist of choosing a default value for all patients or only choosing the scotopic pupil diameter or contour, either of which may not be optimal and may lead to a deeper or bigger treatment.
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