LASER EYE SURGERY SYSTEM CALIBRATION
2 Assignments
0 Petitions
Accused Products
Abstract
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.
4 Citations
42 Claims
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1-24. -24. (canceled)
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25. A method for treating an eye with a laser beam, comprising:
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providing a laser configured to generating the laser beam; providing a tomography system configured to generate a measurement beam and measure at least one surface of a structure of the eye; providing an optical delivery system coupled to the laser and the tomography system configured to deliver the laser beam and the measurement beam to the eye; and storing in a memory a look-up table, the look-up table including first data which maps locations within the eye to one or more control parameters for the laser, and further including second data which maps the locations within the eye to one or more control parameters for the tomography system; by a processor coupled to the memory, in response to the first data in the look-up table, controlling the laser and the optical delivery system to deliver the laser beam to the eye to mark the eye at one or more mark locations corresponding to each of one or more target locations, the one or more target locations being disposed at 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; by the processor, in response to the second data in the look-up table, controlling the tomography system and the optical delivery system to measure with the measurement beam a measured location for each of the one or more marks; comparing the corresponding target location with the measured location for each of the one or more marks to determine a system specific correction of the look-up table; and by the processor, in response to the corrected look-up table, controlling the laser and the optical delivery system to deliver the laser beam to the eye to incise or treat the eye. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A method for calibrating a laser system, comprising:
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providing a laser configured to generate a laser beam; providing a tomography system configured to generate a measurement beam and measure an optically transmissive material of an object; providing an optical delivery system coupled to the laser and the tomography system to deliver the laser beam and the measurement beam to 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 structures of the eye; and storing in a memory a look-up table, the look-up table including first data which maps locations within the object to one or more control parameters for the laser, and further including second data which maps the locations within the object to one or more control parameters for the tomography system; by a processor coupled to the memory, in response to the first data in the look-up table, controlling the laser and the optical delivery system to place one or more marks on the object with the laser beam at one or more mark locations corresponding to one or more target locations; by a processor coupled to the memory, in response to the second data in the look-up table, controlling the tomography system and the optical delivery system to measure one or more locations of the mark with the measurement beam; and comparing the measured locations of the one or more marks with the target locations to calibrate the laser system. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification