Laser eye surgery system calibration
First Claim
1. A laser system to treat an eye with a laser beam, comprising:
- a laser to generate the laser beam;
a tomography system to generate a measurement beam and measure at least one surface of the 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 eye;
a memory storing therein a look-up table, the look-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; and
a processor coupled to the laser, the tomography system, and the optical delivery system, the processor comprising a tangible medium embodying instructions to;
in response to the first data in the look-up table, 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 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,in response to the second data in the look-up table, measure with the measurement beam a measured location for each of the one or more marks, 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 of the laser system or eye position.
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.
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Citations
24 Claims
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1. A laser system to treat an eye with a laser beam, comprising:
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a laser to generate the laser beam; a tomography system to generate a measurement beam and measure at least one surface of the 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 eye; a memory storing therein a look-up table, the look-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; and a processor coupled to the laser, the tomography system, and the optical delivery system, the processor comprising a tangible medium embodying instructions to; in response to the first data in the look-up table, 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 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, in response to the second data in the look-up table, measure with the measurement beam a measured location for each of the one or more marks, and compare 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 of the laser system or eye position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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8. A laser system, comprising:
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a laser to generate a laser beam; a tomography system to generate a measurement beam and measure an optically transmissive material of an object 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; an optical delivery system coupled to the laser and the tomography system to deliver the laser beam and the measurement beam to the object; a memory storing therein a look-up table, the look-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; and a processor coupled to the laser, the tomography system, and the optical delivery system, the processor comprising a tangible medium embodying instructions to; in response to the first data in the look-up table, place a mark on the object with the laser beam in response to a target location and, in response to the second data in the look-up table, measure a location of the mark with the measurement beam, and compare the location of the mark with the target location and calibrate the laser in response to the location of the mark and the targeted location of the mark. - View Dependent Claims (9, 10, 11, 23)
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24. A method of treating an eye with a laser beam with a laser system which includes a laser and a tomography system, the method comprising:
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storing in a memory a look-up table, the look-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; generating the laser beam with the laser; using the tomography system to generate a measurement beam and to measure at least one surface of a structure of the eye; delivering the laser beam and the measurement beam to the eye via an optical delivery system coupled to the laser and the tomography system; in response to the first data in the look-up table, marking 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 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; in response to the second data on the look-up table, measuring with the measurement beam a measured location for each of the one or more marks; and comparing 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 of the laser system or eye position.
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Specification