METHOD AND APPARATUS FOR CENTRATION OF AN OCULAR IMPLANT
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United States of America Patent
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Issued Date -
Aug 9, 2012
app pub date -
Oct 13, 2010
filing date -
Oct 13, 2009
priority date (Note) -
Abandoned
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Abstract
This application describes apparatuses and techniques for identifying and marking a position corresponding to the intersection of a patient's line of sight with the anterior surface of the human cornea to aid centration of an ocular implant. The apparatus can include a first optical subsystem configured to project a first light through an aperture and along an instrument axis such that the patient will observe an annulus around a disc when the patient's visual axis is substantially collinear with the instrument axis and the patient will not observe the annulus when the visual axis is not substantially collinear with the instrument axis. The apparatus may also include a second optical subsystem configured to project a second light along the instrument axis such that the second light appears to a clinician to be an annulus around the first light.
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