Patent ID: 8985767
Filing Date: 2015-03-24
Classification: A61B,G02C

Abstract:
1. A method for designing a progressive lens, the method comprising: obtaining a wavefront measurement of an eye, the wavefront measurement comprising information about second order aberrations of the eye and about higher order aberrations of the eye; determining an initial design for the progressive lens based on the wavefront measurement, the initial design comprising, for one or more points on the lens, information about second order aberrations of the progressive lens and higher order aberrations of the progressive lens, the initial design providing a target correction for the eye in the absence of the higher order aberrations of the eye; determining information about how changes in one or more higher order aberrations of the eye affect a second order correction for the aberrations of the eye based on information derived from the wavefront measurement; modifying the initial design of the progressive lens using a computer processor to provide a final progressive lens design, wherein the modification accounts for an expected variation of the correction from the target correction due to one or more higher order aberrations of the initial progressive lens design and the information about how changes in one or more higher order aberrations of the eye affect the second order correction for the aberrations of the eye; and outputting the final lens design.