Method of corneal anlysis using a checkered placido apparatus
AssigneeLaserSight Technologies, Inc.
InventorsHery M. D'Souza, Edwin J. Sarver, Youssef S. Wakil
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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.
Claims1
A method of corneal analysis using a checkered placido comprising the following steps:
- a) projecting the image of said checkered placido onto a patient's cornea;
- b) detecting an image of said checkered placido reflected off of said cornea;
- c) detecting a plurality of nodal points from said reflected image of said checkered placido;
- d) determining mean curvature of said cornea at a plurality of said nodal points;
- and
- e) analyzing said mean curvature at said plurality of said nodal points to produce a graphic display of the estimated actual curvature of said cornea.
Dependencies are inferred from the claim text.