TREATMENT DEVICE FOR SURGICAL CORRECTION OF A REFRACTIVE ERROR OF AN EYE, METHOD FOR GENERATING CONTROL DATA THEREFOR, AND METHOD FOR SURGICAL CORRECTION OF A REFRACTIVE ERROR OF AN EYE

摘要

A treatment device for surgical correction of a refractive error of the eye (3) is provided, wherein the treatment device (1) has a laser apparatus (L) which is controlled by a control apparatus (12) and which, by radiating laser radiation (2) severs corneal tissue, wherein the control apparatus (12) is designed to establish a desired refractive error correction from measurement data of the eye (3), generate control data for the laser apparatus (L) on the basis of the desired refractive error correction and actuate the laser apparatus (L) to emit the laser radiation (2) into the cornea (5) as per the control data in such a way that a lenticle-shaped volume (18) is thereby isolated in the cornea (5), wherein the control apparatus (12) establishes an intended lenticle-shaped volume by computation, the removal of which from the cornea (18) leads to an actual refractive error correction in an optical zone in the eye (3), which deviates from the desired refractive error correction at the edge of the optical zone more strongly than in the centre of the optical zone, and which generates control data in such a way that these describe the lenticle-shaped intended volume, wherein the thickness of the lenticle-shaped intended volume is less than the thickness of a lenticle-shaped comparison volume, the removal of which from the cornea (18) would bring about the desired refractive error correction.