METHOD AND APPARATUS FOR AUTOMATED PLACEMENT OF SCANNED LASER CAPSULORHEXIS INCISIONS
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Accused Products
Abstract
Systems and methods are described for cataract intervention. In one embodiment a system comprises a laser source configured to produce a treatment beam comprising a plurality of laser pulses; an integrated optical system comprising an imaging assembly operatively coupled to a treatment laser delivery assembly such that they share at least one common optical element, the integrated optical system being configured to acquire image information pertinent to one or more targeted tissue structures and direct the treatment beam in a 3-dimensional pattern to cause breakdown in at least one of the targeted tissue structures; and a controller operatively coupled to the laser source and integrated optical system, and configured to adjust the laser beam and treatment pattern based upon the image information, and distinguish two or more anatomical structures of the eye based at least in part upon a robust least squares fit analysis of the image information.
10 Citations
34 Claims
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1-15. -15. (canceled)
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16. A system for cataract surgery on an eye of a patient, comprising:
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a. a laser source configured to produce a treatment beam comprising a plurality of laser pulses; b. an integrated optical system comprising an Optical Coherence Tomographer (OCT) coupled to a treatment laser delivery assembly such that the OCT and the treatment laser delivery assembly share at least one common optical element, the integrated optical system being configured to acquire image information pertinent to one or more targeted tissue structures and direct the treatment beam in a 3-dimensional pattern to cause breakdown in at least one of the targeted tissue structures; c. a patient support configured to maintain the eye of the patient within a range of the optical system; and d. a controller operatively coupled to the laser source and integrated optical system, and configured to; 1) adjust the laser beam and treatment pattern based upon the image information, 2) operate the OCT to perform one or more A-scans of at least one anatomical structure of the eye at each of a plurality of XY locations, thereby obtaining image information of a predetermined range of Z locations at each of the plurality of XY locations; 3) identify a plurality of candidate edge locations in the form of XYZ triples by identifying either a first non-zero pixel are a last non-zero pixel in each predetermined range of Z locations for each of the plurality of XY locations; and 4) fit a mathematical surface model to the candidate edge locations, thereby identifying a boundary of the anatomical structure. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification