| abstract |
A laser-based device for non-mechanical, three-dimensional trepanation in corneal transplants comprises - a computer-aided control and regulating unit (4) with at least one control computer (5, 6, 7) and at least one display unit (8, 9), - A laser source (2) for generating a working laser beam (3) and - a multi-sensor processing head (1), in which are integrated: an axial beam guide (11) into which the working laser beam (3) can be coupled, = a focus tracking unit (12) for z-position adjustment of the focus (13) of the working laser beam (3), an xy scanner unit (14, 15) for xy position adjustment of the working laser beam (3), = an eye position sensor unit (23, 24, 35, 36) for detecting the position of the eye, and = a plasma sensor unit (16, 25) for detecting the plasma glow that occurs during corneal trepanation. |