Method for controlling an eye surgical laser and treatment device

A method for controlling an eye surgical laser for the separation of a volume body with a predefined posterior interface and a predefined anterior interface from a human or animal cornea, comprising:

• controlling the eye surgical laser by means of a control device such that the eye surgical laser emits pulsed laser pulses in a predefined pattern into the human or animal cornea,
• wherein the interfaces of the volume body to be separated are defined by the predefined pattern and the interfaces are generated by means of an interaction of the individual pulsed laser pulses with the human or animal cornea by means of photodisruption,
• wherein the control device controls a laser beam of the eye surgical laser such that both interfaces are generated by means of a continuous, uninterrupted sequence of the pulsed laser pulses along the interfaces,
• wherein the control device controls the laser beam such that the posterior interface is generated in a first step by means of an incision course of the laser beam starting from a central area of an eye and ending in a predetermined edge area of the human or animal cornea,
• wherein the control device controls the laser beam such that the anterior interface is generated in a second step by means of an incision course of the laser beam starting from the predetermined edge area of the human or animal cornea and ending in the central area of the eye,
• wherein the laser beam executes a change of a direction of movement in a transition zone between the posterior interface and the anterior interface in the predetermined edge area of the human or animal cornea, and
• wherein the control device controls the laser beam to generate the interfaces of the volume body to be separated in one incision.