Patent ID: 8491577

Claim:
System for ophthalmic laser surgery, comprising: a source of pulsed laser radiation; a scanner for deflecting the laser radiation; an electronic control unit which has been set up to control the scanner in accordance with a predetermined incision geometry; and a modulator unit for modulating the laser pulses emitted from the source, the electronic control unit configured to control the modulator unit in accordance with a beam-deflection pattern established for the incision geometry in such a manner that in predetermined parts of the beam-deflection pattern at least some of the laser pulses have a reduced pulse energy relative to a pulse energy of laser pulses for other parts of the beam-deflection pattern, wherein the beam-deflection pattern includes a spiral pattern having an inner spiral region and an outer spiral region and wherein the control unit controls the modulator unit to produce a uniform focal-location density over the spiral pattern by producing an energy reduction of a first ratio of the laser pulses emitted from the source for the inner spiral region and producing an energy reduction of a second ratio of the laser pulses emitted from the source for the outer spiral region, the first ratio being greater than the second ratio.