CREATION OF CURVED CUTS IN THE INSIDE OF THE EYE CORNEA

摘要

A device for isolating a lenticle in the cornea of an eye. The device includes: a laser beam source to emit pulsed laser radiation having a pulse frequency of 1.2 MHz to 10 MHz, a pulse energy of 1 nJ to 200 nJ and a wavelength penetrating the cornea; a beam-forming unit having beam optics with an image field and that bundles pulsed laser radiation into a focus located inside the image field, and which has a maximum diameter of less than 3 μm; a beam-deflection unit shifting the focus in the cornea and inside the image field, the focus moving along a path when the image field is resting; and a control unit to control the source and the beam-forming unit to isolate the lenticle by specifying the path. The lenticle is delimited by a cut surface which is curved with regard to a front surface of the cornea.

主权项

1. A device for isolating a lenticle in the cornea of an eye comprising:
a laser beam source that is designed to emit pulsed laser radiation with:
a pulse frequency of 1.2 MHz to 10 MHz,a pulse energy of 1 nJ to 200 nJ anda wavelength which penetrates into the cornea; a beam forming unit which has:
beam optics having an image field and which bundle the pulsed laser radiation in the cornea into a focus which is located inside the image field and which has a maximum diameter of less than 3 μm, anda beam deflection unit which shifts the focus in the cornea and inside the image field, wherein the focus moves along a path while the image field is resting; anda control unit, which is designed to control the laser beam source and the beam forming unit, in order to isolate the lenticle in the cornea by specifying the path, which lenticle is delimited by at least one cut surface which is curved with regard to a front surface of the cornea.