LASER EYE SURGERY SYSTEM CALIBRATION

摘要

A laser system is calibrated with a tomography system capable of measuring locations of structure within an optically transmissive material such as a tissue of an eye. Alternatively or in combination, the tomography system can be used to track the location of the eye and adjust the treatment in response to one or more of the location or an orientation of the eye. In many embodiments, in situ calibration and tracking of an optically transmissive tissue structure such as an eye can be provided. The optically transmissive material may comprise one or more optically transmissive structures of the eye, or a non-ocular optically transmissive material such as a calibration gel in a container or an optically transmissive material of a machined part.

主权项

1. A laser system to treat an object with a laser beam, comprising:
a laser to generate the laser beam; a tomography system to generate a measurement beam and measure an optically transmissive material of the object, the object being selected from the group consisting of an eye, a fluid of a patient interface above the eye, and a calibration apparatus comprising one or more structures similar to a structure of the eye; an optical delivery system coupled to the laser and the tomography system to deliver the laser beam and the measurement beam to the object; and a processor coupled to the laser, the tomography system, and the optical delivery system, the processor comprising a tangible medium embodying instructions to:
mark the eye at one or more locations corresponding to each of one or more target locations, the one or more locations comprising locations of one or more of a cornea, an aqueous humor, an iris, an anterior lens capsule, an anterior lens capsule, a posterior lens capsule, a cortex, or a nucleus and,
measure a location for each of the one or more marks with the measurement beam, andcompare the corresponding target location with the measured location for each of the one or more marks in order to determine one or more of calibration or eye position.