Wavefront optimized progressive lens

Abstract

A method for designing a progressive lens, the method includes obtaining a wavefront measurement of an eye, the wavefront measurement including 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 including, 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 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.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Provisional Patent Application No. 61 / 365,033, filed July 16, 2010, entitled "WAVEFRONT OPTIMIZED PROGRESSIVE LENS," the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to ophthalmic lenses, and more particularly to progressive lenses and methods for designing such lenses. Background technique [0004] Wavefront aberration is the result of the difference in optical path length between an ideal wavefront that results in perfect focus through optical systems such as ophthalmic lenses and the eye, and an aberrated wavefront , the aberrated wavefront is generated by the actual optical system. Wavefront aberrations are often classified by the radial order in which these wavefronts differ, which indicates the dependence of the aberrations on pupil size. The optical components of the human eye suffer from "low order" as...

AI Technical Summary

Problems solved by technology

However, the eye examination and lens design process for conventional spectacle prescriptions (Rx) generally only yields corrections that minimize the lower order aberrations of the eye

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