FOURIER-DOMAIN OCT RAY-TRACING ON THE EYE

摘要

The invention relates to an ophthalmologic measuring method that can depict three-dimensional structures of the interfaces of an eye by means of low coherence interferometry based on reference points. To this end, the pupil is illuminated at a number of points by a low coherence light source (1). The measurement radiation (18) reflected at these points by the interfaces and surfaces of the eye (13) is superimposed with a reference radiation (17). The measurement data generated hereby are spectrally split up by a diffraction grating (16), projected onto a two-dimensional detector array (15), and routed to a control unit that determines a three-dimensional structure of all intraocular interfaces and surfaces of the eye (13). During the inventive Fourier domain OCT method, the depiction of the three-dimensional structures preferably ensues by means of spline surfaces or polygonal surfaces. This makes it possible to determine the depth positions of the measuring beams at many pupil points with a single image taken by the array camera by illuminating the pupil with an aperture grid, and the reference mirror contains a periodic phase grid.