| abstract |
A laser-based device for non-mechanical, three-dimensional trepanation during cornea transplants comprises n a computer-assisted control and regulation unit ( 4 ) provided with at least one control computer ( 5, 6, 7 ) and at least one display unit ( 8, 9 ), as well as a laser source ( 2 ) for generating a working laser beam ( 3 ) as well as a multi-sensor processing head ( 1 ) integrated into which are: an axial beam positioning system ( 11 ) into which the working laser beam ( 3 ) can be coupled, a focal point tracking unit ( 12 ) for the z-position displacement of the focal point ( 13 ) of the working laser beam ( 3 ) an x-y-scanner unit ( 14, 15 ) for the x and y-position displacement of the working laser beam ( 3 ), an eye position sensor unit ( 23, 24, 35, 36 ) for detection of the position of the eye, and a plasma sensor unit ( 16, 25 ) for detection of the plasma glow that occurs during the cornea trepanation. |