The invention relates to a laser arrangement, in particular for ophthalmological laser surgery, comprising a laser source (14) for producing laser radiation, controllable scanning components (20) for adjusting a focus position of the laser radiation, measuring components (30) for detecting information which is representative of an actual position of the radiation focus, and a control arrangement (22) controlling the laser source and the scanning components. According to the invention, the control arrangement is configured to carry out a test run of at least some of the scanning components according to a predetermined test scanning pattern when the laser source is switched off, the test scanning pattern representing a plurality of discrete rated focus positions to be moved to in succession, and the control arrangement being configured to stop the scanning movement of the scanning components for each of the rated focus positions and, in association with each of the rated focus positions, to determine an actual focus position on the basis of the measuring component information detected. The rated focus positions are preferably arranged at the edge of a given maximum scanning field.
