Patent ID: 8523846
Filing Date: 2013-09-03
Classification: A61B,A61F

Abstract:
1. A corneal surgery apparatus, which comprises: a laser irradiation optical system capable of changing an irradiation position with a laser beam emitted from a laser source on a cornea of a patient's eye; and an eye position change detection unit, which comprises: wherein the corneal surgery apparatus further comprises a control unit arranged to extract the iris pattern at an iris portion and a background of the iris pattern based on luminance information on the anterior-segment image picked up with the image pick-up camera, and adjust at least one of a set value of an illumination light amount of the illumination optical system and a set value of a gain of the image pick-up camera so that a luminance difference between the iris pattern and the background of the iris pattern is maximized or exceeds a predetermined reference value, and luminance at the iris pattern at the iris portion and the background of the iris pattern is not saturated.