Devices and methods for preparing and performing corneal tattoos

摘要

The invention relates to a planning device for determining control data for a treatment device (1) for operative tattooing of the cornea (22) of a patient's eye (3), a treatment device, a method for preparing control data, and operative tattooing of the cornea. The object is to describe devices and methods for the preparation and implementation of corneal tattoos which produce a low-side-effects, artificial iris in the cornea that is hardly distinguishable from the natural iris and that assumes maximum natural iris functions. This object is achieved by devices and methods which define from measured and functional data an annular surface (32) which lies within the cornea and which is bounded by a circular inner edge (15) having an inner diameter and a circular outer one Rim (16) with an outer diameter, wherein the annular surface is spaced from and inclined to the corneal surface (23), and for this annular surface a control data record is generated for driving, in the cornea with a pattern of the target points (6) defining an overlapping perforation area (4) in which corneal tissue is separated from one another when pulsed laser radiation (2) is irradiated, and the outer edge of the annular area is at a constant distance from the outer edge of the iris.