Smooth and uniform laser ablation apparatus and method
First Claim
Patent Images
1. A method of ablating tissue with an ablating laser beam, the method comprising:
- defining a plurality of scan lines in an ablation zone on said tissue;
defining a plurality of laser beam ablation points along each of said scan lines; and
scanning said ablating laser beam along a series of non-adjacent ones of said plurality of scan lines and ablating said tissue at non-adjacent ones of said laser beam ablation points.
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Abstract
A laser beam delivery apparatus and a method for smoothly and uniformly ablating tissue, e.g., for reshaping a cornea of an eye, even in the face of real-world conditions such as a moving eye. The method includes defining a plurality of scan lines in an ablation zone on the tissue and defining a plurality of laser beam ablation points along each of the scan lines. An ablating laser beam is scanned along a series of non-adjacent scan lines of the plurality of scan lines and tissue is intermittently ablated at non-adjacent ones of the laser beam ablation points on each non-adjacent scan line of the series of non-adjacent scan lines.
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Citations
21 Claims
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1. A method of ablating tissue with an ablating laser beam, the method comprising:
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defining a plurality of scan lines in an ablation zone on said tissue; defining a plurality of laser beam ablation points along each of said scan lines; and scanning said ablating laser beam along a series of non-adjacent ones of said plurality of scan lines and ablating said tissue at non-adjacent ones of said laser beam ablation points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of ablating tissue with an ablating laser beam, the method comprising:
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dividing an ablation zone into a plurality of domains; determining an average depth of ablation in each of said domains; and ablating said tissue by controlling a plurality of ablating laser beam pulses in each of said plurality of domains in proportion to said average depth of ablation in each of said plurality of domains.
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11. A method of ablating tissue with an ablating laser beam, the method comprising:
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defining a plurality of scan lines in an ablation zone on said tissue; defining a plurality of laser beam ablation points along each of said plurality of scan lines; and scanning said ablating laser beam along a series of non-adjacent ones of said plurality of scan lines. - View Dependent Claims (12)
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13. A method of ablating tissue with an ablating laser beam, the method comprising:
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defining a plurality of scan lines in an ablation zone on said tissue; defining a plurality of laser beam ablation points along each of said plurality of scan lines; and scanning said ablating laser beam along said plurality of scan lines at non-adjacent ones of said laser beam ablation points. - View Dependent Claims (14)
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15. Apparatus for ablating tissue with an ablating laser beam, comprising:
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means for defining a plurality of scan lines in an ablation zone on said tissue; means for defining a plurality of laser beam ablation points along each of said plurality of scan lines; and means for scanning said ablating laser beam along a series of non-adjacent ones of said plurality of scan lines. - View Dependent Claims (16)
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17. Apparatus for ablating tissue with an ablating laser beam, comprising:
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means for defining a plurality of scan lines in an ablation zone on said tissue; means for defining a plurality of laser beam ablation points along each of said plurality of scan lines; and means for scanning said ablating laser beam along said plurality of scan lines at non-adjacent ones of said laser beam ablation points. - View Dependent Claims (18)
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19. A method of ablating tissue with an ablating laser beam, the method comprising:
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defining an ablation pattern forming a plurality of pattern lines in an ablation zone on said tissue; defining a plurality of overlapping laser beam ablation points along each of said pattern lines; and randomly scanning said ablating laser beam in said ablation pattern to ablate a first series of non-adjacent ones of said laser beam ablation points. - View Dependent Claims (20, 21)
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Specification