The present invention relates to an apparatus 10 for ophthalmological laser surgery, with an optical imaging system for imaging a treatment laser beam 14 onto a focal point, with a temperature-measuring device for measuring a temperature assigned to the imaging system, and with an electronic control arrangement (22) connected to the temperature-measuring device, which is configured to control the focal-point setting in a manner depending on the measured temperature. The present invention further relates also to an associated method.
