Ophthalmological device for processing a curved treatment face

A computer program product comprising a non-transitory computer-readable medium having stored thereon computer program code for controlling a processor of an ophthalmological device which comprises a laser source configured to generate a pulsed laser beam, a focussing optical module configured to make the pulsed laser beam converge onto a focal spot in the eye tissue, and a scanner system with at least two scan axes configured to move the focal spot to target locations in the eye tissue, the scanner system having scan capabilities defined by scan performance characteristics of each particular scan axis, wherein the computer program code is configured to control the processor such that the processor:

• uses treatment control data to control the scanner system to move the focal spot in the eye tissue to target locations along a processing path defined by the treatment control data to process a curved treatment face in the eye tissue;
• performs a feasibility check, using the treatment control data and the scan performance characteristics of the at least two scan axes, prior to processing the curved treatment face in eye tissue;
• and
• performs at least one of:
• generating an alarm signal or adjusting the treatment control data, in case of a negative outcome of the feasibility check, indicating that moving the focal spot along the processing path, defined by the treatment control data, exceeds the scan capabilities of the scanner system, or
• uses the treatment control data to control the scanner system to process the curved treatment face in the eye tissue, in case of a positive outcome of the feasibility check, indicating that moving the focal spot along the processing path, defined by the treatment control data, does not exceed the scan capabilities of the scanner system.

A method comprising:

• generating, by a laser source, a pulsed laser beam;
• focussing the pulsed laser beam to converge onto a focal spot in or on eye tissue;
• moving, by a scanner system with a plurality of scan axes, the focal spot to target locations in or on the eye tissue, the scanner system having scan capabilities defined by scan performance characteristics of each particular scan axis;
• using treatment control data to control the scanner system to move the focal spot in or on the eye tissue to target locations along a processing path defined by the treatment control data to process a curved treatment face in the eye tissue;
• performing a feasibility check, using the treatment control data and the scan performance characteristics of the plurality of scan axes, prior to processing the curved treatment face in eye tissue;
• and
• performing at least one of:
• generating an alarm signal or adjusting the treatment control data, in case of a negative outcome of the feasibility check, indicating that moving the focal spot along the processing path, defined by the treatment control data, exceeds the scan capabilities of the scanner system, or
• using the treatment control data to control the scanner system to process the curved treatment face in the eye tissue, in case of a positive outcome of the feasibility check, indicating that moving the focal spot along the processing path, defined by the treatment control data, does not exceed the scan capabilities of the scanner system.