Patent ID: 7780653
Filing Date: 2010-08-24
Classification: A61F

Abstract:
1. A method for correcting refractive error in an eye of a human or animal subject, the method comprising the steps of: A) determining the refractive error; B) measuring topography of the cornea of the eye; C) marking the cornea to indicate the existing rotational orientation of a corneal tissue cap; D) excising the corneal tissue cap from the eye in a manner that causes either i) a center portion of the cap to be thicker than the edges surrounding that center portion or ii) a center portion of the cap to be thinner than the edges surrounding that center portion; E) determining, based on the measured refractive error and corneal topography as well as the configuration of the excised corneal tissue cap, an adjusted rotational orientation in which the excised corneal tissue cap may be repositioned on the eye in order to correct the refractive error; F) repositioning the excised corneal tissue cap on the eye in the adjusted rotational orientation determined in Step E to thereby correct the refractive error.