DEVICE USED FOR THE PHOTOREFRACTIVE KERATECTOMY OF THE EYE USING A CENTERING METHOD

摘要

The invention relates to a device used for the photorefractive keratectomy of the eye, especially LASIK, which uses a UV laser beam for ablating parts of the cornea. A centering light beam (34) is arranged coaxially with respect to the fixing light beam (24) and has a wavelength different from that of the fixing light beam. The device is provided with means (28, 36, 38) for measuring and evaluating the position of the scattered light/Fresnel reflection of the centering light beam (34) on the front face of the cornea. The point (20) in which the centering light beam (34) passes through the front face of the cornea (12) is used as the center of ablation.