Eye surgery refraction correction

摘要

A planning device produces control data for a treatment device for eye surgery which produces at least one cutting surface in a cornea of the eye using a laser device. The planning device includes a calculation module for establishing a cornea cutting surface. The calculation module is configured to establish the cornea cutting surface based on data of a refraction correction, to produce a control data set for actuating the laser device for the cornea cutting surface, and to determine the cornea cutting surface in such a way that it consists of a plurality of sub-surfaces, each of which make a contribution to the refraction correction.

主权项

1. A planning device for producing control data for a treatment device for eye surgery which produces at least one cutting surface in a cornea of an eye using a laser device to produce a lenticule for removal from the eye, the planning device comprising:
a calculation module for establishing the at least one cutting surface defining the lenticule, the calculation module being configured to: establish the at least one cutting surface based on data of a desired refraction correction of the eye, produce a control data set for actuating the laser device for the at least one cutting surface, and determine the at least one cutting surface in such a way that it comprises a plurality of zones, wherein the plurality of zones comprises:
a first correction zone having a first depth and a first curvature, the first curvature being selected to achieve a first refraction correction over the first correction zone, and a second correction zone having a second depth and a second curvature, the second curvature being selected to achieve a second refraction correction over the second correction zone, wherein the first and second depths differ from each other, and wherein the first and second refraction corrections are equal to each other and to the desired refraction correction of the eye.