A device for laser-optical eye surgery includes a source (10) of pulsedfemtosecondlaser radiation and also optical components (12, 14, 16) for guiding the laserradiation and focusing the same onto a treatment location on or in the eye(28), theoptical components including a plurality of lenses (18, 20) arranged insuccession inthe beam path of the laser radiation. In accordance with the invention, atleast one(18) of the lenses is arranged so as to be adjustable relative to other lensesin thedirection of the beam path. In particular, the adjustable lens is a firstdiverging lensof beam-expansion optics (12). An actuating arrangement (24) is assigned totheadjustable lens for its adjustment, for the control of which arrangement acontrol unit(26) is provided which is set up to access measured data concerning thetopographyof a surface of the eye and to control the actuating arrangement in a mannerdepending on the measured surface topography.
