SYSTEM AND METHOD FOR OPHTHALMIC SURFACE MEASUREMENTS BASED ON SEQUENTIAL ESTIMATES
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United States of America Patent
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Issued Date -
May 30, 2013
app pub date -
Nov 30, 2012
filing date -
Nov 30, 2011
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Abstract
Systems and methods for measuring a topography of an optical tissue surface of an eye are provided by combining measured elevations of the surface with a priori information of the surface to provide an estimate of mean and covariance of post-measurement orthogonal polynomial sequence amplitudes associated with the surface, determining a variance of elevation of the surface from the estimate, and constructing the topography from the estimate of mean and covariance of post-measurement amplitudes based on a comparison of the variance of elevation of the surface with a pre-determined threshold. The a priori information includes an estimate of mean and covariance of pre-measurement orthogonal polynomial sequence amplitudes associated with the surface.
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