Objective measurement and correction of optical systems using wavefront analysis.

摘要

An optical correction system (10) for correcting visual defects of an eye (120), the system (10) of optical correction comprises: analyzer wavefront (26) for determining an optical path difference between a wavefront reference (131) and a wavefront with aberrations (130) of the eye (120), a converter (40) for providing an optical correction of each eye based on the optical path difference and refractive indices of media (126) through the passing wavefront aberrations (130), characterized in that: the optical correction system further comprises: an optical train in the path of wavefront aberrations comprising a first maintained lens in a first fixed position and a second lens to change the length of the optical path between said first and second lenses.