UV-laser-based system for correcting impaired vision, and method for centering same
AssigneeCarl Zeiss Meditec AG
InventorsHartmut Vogelsang, Christian Deutsch, Ingo Wundrich, Dan Zoltan Reinstein
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Abstract
A UV-laser-based system (UVL-LVC system) for correcting the impaired vision of a patient's eye has a UV-laser source, which emits laser radiation to treat the patient's eye, and imaging optics for focusing the laser radiation onto the cornea of the patient's eye. The imaging optics allow a detection of a reflection of radiation, which is emitted onto the cornea of the patient's eye with the imaging optics and is at least partly reflected by the cornea of the patient's eye back into the imaging optics at an acceptance angle χMax of at least 2.5°. Additionally a method for centering a UVL-LVC system is disclosed.
Claims48
A UV laser-based system for vision correction (UVL-LVC system) of a patient's eye, the UVL-LVC system comprising:
- a UV laser source emitting laser radiation for treating the patient's eye;
- an imaging optical unit focusing the laser radiation on the cornea of the patient's eye, the imaging optical unit being configured to allow a detection of a back reflection of radiation radiated on the cornea of the patient's eye by the imaging optical unit and at least partially reflected by the cornea of the patient's eye, within an acceptance angle χMax of at least 2.5°.
A method for centering a UV laser-based system for vision correction (UVL-LVC system) for a patient's eye, the method comprising:
- radiating a centration beam on the cornea of the patient's eye by an imaging optical unit;
- detecting a back reflection of a part of the radiated-in centration beam reflected by the cornea by means of the imaging optical unit, the back reflection being detected in an angular range of at least 2.5°;
- and
- determining a positioning and/or orientation of the UVL-LVC system relative to the patient's eye on the basis of the detected back reflection.
Dependencies are inferred from the claim text.