Patent ID: 8911431
Filing Date: 2014-12-16
Classification: A61B,A61F

Abstract:
1. An ophthalmological laser system, for the diagnosis of an eye, a lens of the eye and/or therapy of presbyopia, the ophthalmological laser system comprising: a laser emitting detection radiation, the radiation being selected to pass through a cornea and aqueous humor of the eye and being focusable in an examination region including the lens of the eye as illumination light via a beam path; the beam path, comprising a beam splitter, a scanner unit, and focusing optics structured to focus the detection radiation in the examination region; wherein returning detection radiation, which returns to the beam splitter from a direction of the examination region, reaches a detector as detection light through a confocal aperture diaphragm; wherein the beam splitter is a polarization beam splitter, which decouples the detection light selectively onto the detector such that the detection light exhibits a polarization direction different from the illumination light; and a control unit programmed to control the scanner unit such that each two consecutive scan points of a continuous scan curve or structure differ from each other in all three spatial coordinates and to determine at least one of form, structure and position of an ocular structure based on the detection light returned from the scan points; wherein the continuous scan curve or structure comprises a Lissajous pattern shape; and further wherein the control unit is further programmed to control the scanner unit such that the Lissajous pattern shape comprises two harmonics and wherein the two harmonics have different frequencies including a first frequency and a second frequency.