US 12,569,369 B2 · System for laser-based ametropia correction, and method for the alignment thereof

Abstract

A method for aligning a system for laser-based ametropia correction relative to a patient's eye to be treated is disclosed. Predefined pre-operative measurement data which characterize at least predetermined structures of the patient's eye is provided. The predetermined structures include a part of the patient's eye to be treated. In addition, the method includes measuring at least one part of the predetermined structures of the patient's eye using an OCT system immediately before and/or during treatment for ametropia correction of the patient's eye and providing OCT measurement data, and comparing the OCT measurement data and the predefined pre-operative measurement data and preparing comparative data. The method also includes ascertaining a position and/or orientation of the part of the patient's eye to be treated relative to the system and aligning the system relative to the patient's eye using the ascertained position and/or orientation of the part of the patient's eye.

Claims25

Dependent claims

A method for aligning a system for laser-based vision correction relative to a patient's eye to be treated, the method comprising:

providing specified preoperative measurement data which at least characterize predetermined structures of the patient's eye, the predetermined structures including a portion of the patient's eye to be treated, wherein the provided specified preoperative measurement data are based on a measurement carried out independently of the system for laser-based vision correction;
measuring at least a portion of the predetermined structures of the patient's eye with an Optical Coherence Tomography (OCT) system immediately before and/or during a treatment for vision correction for the patient's eye and providing OCT measurement data;
comparing the OCT measurement data with the specified preoperative measurement data and providing comparison data;
and
determining a positioning and/or orientation of the portion of the patient's eye to be treated relative to the system using the comparison data, and aligning the system relative to the patient's eye using the determined position and/or orientation of the portion of the patient's eye to be treated.

2 more elements

A system for laser-based vision correction for a patient's eye, the system comprising

an Optical Coherence Tomography (OCT) system for measuring predetermined structures of the patient's eye immediately before and/or during a treatment for vision correction for the patient's eye and for providing OCT measurement data which characterize the measured predetermined structures of the patient's eye;
and
a control unit configured to compare the OCT measurement data provided by the OCT system with specified preoperative measurement data and to determine a positioning and/or orientation of a portion of the patient's eye to be treated relative to the system using comparison data from the comparison between the OCT measurement data provided by the OCT system and the specified preoperative measurement data, and to align the system relative to the patient's eye using the determined position and/or orientation of the portion of the patient's eye to be treated;
wherein the provided specified preoperative measurement data are based on a measurement carried out independently of the system for laser-based vision correction.

1 more element

Dependencies are inferred from the claim text.

System for laser-based ametropia correction, and method for the alignment thereof

Life of this patent

System for laser-based ametropia correction, and method for the alignment thereof

Life of this patent

Abstract

Claims25