Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1996-10-23
1998-11-24
Dang, Hung X.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351247, A61B 310
Patent
active
058415114
ABSTRACT:
A method for analysis of the curvature of the surface of a cornea using a checkered placido comprises, projecting the image of the checkered placido onto a patient's cornea, detecting the image of the checkered placido reflected off of the cornea, detecting a plurality of nodal points from the reflected image, determining the mean curvature at a plurality of nodal points and analyzing the mean curvature at a plurality of nodal points in order to produce a graphic display of the estimated actual curvature of the cornea.
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D'Souza Henry M.
Sarver Edwin J.
Wakil Youssef S.
Dang Hung X.
Eyesys Technologies, Inc.
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