Patent ID: 8852176

Claim:
Apparatus for ophthalmological laser surgery, comprising: a laser-beam source for emitting a focused treatment laser beam, an optical-coherence interferometric measuring device for measuring the distance of a predetermined point or region of an eye to be treated from a reference point which is in a known relationship to the focal position of the treatment laser beam, and an evaluating and control unit which has been set up to register, on the basis of the measured distance data of the measuring device, the coincidence or divergence of a desired location of action of the treatment laser beam on or in the eye and of the focal position of the treatment laser beam and in the case of coincidence or divergence to bring about a predetermined output action, wherein the predetermined output action in the case of coincidence or divergence includes a display of a needed adjustment of a patient positioning in order for the desired location of action of the treatment laser beam on or in the eye to coincide with the focal position of the treatment laser, wherein the display of the needed adjustment includes both a direction and a distance necessary for the desired location of action of the treatment laser beam on or in the eye to coincide with the focal position of the treatment laser.