Method and apparatus for patterned plasma-mediated laser trephination of the lens capsule and three dimensional phaco-segmentation
First Claim
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1. A method of making an incision in eye tissue, comprising:
- generating a beam of light;
focusing the beam at a first focal point located at a first depth in the eye tissue;
scanning the beam in a pattern on the eye while focused at the first depth;
focusing the beam at a second focal point located at a second depth in the eye tissue different than the first depth; and
scanning the beam in the pattern on the eye while focused at the second depth.
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Abstract
System and method for making incisions in eye tissue at different depths. The system and method focuses light, possibly in a pattern, at various focal points which are at various depths within the eye tissue. A segmented lens can be used to create multiple focal points simultaneously. Optimal incisions can be achieved by sequentially or simultaneously focusing lights at different depths, creating an expanded column of plasma, and creating a beam with an elongated waist.
396 Citations
50 Claims
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1. A method of making an incision in eye tissue, comprising:
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generating a beam of light;
focusing the beam at a first focal point located at a first depth in the eye tissue;
scanning the beam in a pattern on the eye while focused at the first depth;
focusing the beam at a second focal point located at a second depth in the eye tissue different than the first depth; and
scanning the beam in the pattern on the eye while focused at the second depth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of making an incision in eye tissue, comprising:
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generating a beam of light; and
passing the beam through a multi-focal length optical element so that a first portion of the beam is focused at a first focal point located at a first depth in the eye tissue and a second portion of the beam is focused at a second focal point located at a second depth in the eye tissue different than first depth. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of making an incision in eye tissue, comprising:
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generating a beam of light having at least a first pulse of light and a second pulse of light; and
focusing the first and second pulses of light consecutively into the eye tissue, wherein the first pulse creates a plasma at a first depth within the eye tissue, and wherein the second pulse arrives before the plasma disappears and is absorbed by the plasma to extend the plasma in the eye tissue along the beam. - View Dependent Claims (20, 21)
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22. A method of making an incision in eye tissue, comprising:
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generating a beam of light; and
focusing the light into the eye tissue to create an elongated column of focused light within the eye tissue, wherein the focusing includes subjecting the light to at least one of a non-spherical lens, a highly focused lens with spherical aberrations, a curved mirror, a cylindrical lens, an adaptive optical element, a prism, and a diffractive optical element. - View Dependent Claims (23, 24)
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25. A method of removing a lens and debris from an eye, comprising:
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generating a beam of light;
focusing the light into the eye to fragment the lens into pieces;
removing the pieces of lens; and
thenfocusing the light into the eye to ablate debris in the eye. - View Dependent Claims (26, 27)
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28. A method of removing a lens from a lens capsule in an eye, comprising:
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generating a beam of light;
focusing the light into the eye to form incisions in the lens capsule;
inserting an ultrasonic probe through the incision and into the lens capsule to break the lens into pieces;
removing the lens pieces from the lens capsule;
rinsing the lens capsule to remove endothermial cells therefrom; and
inserting at least one of a synthetic foldable intraocular lens or an optically transparent gel into the lens capsule.
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29. An ophthalmic surgical system for treating eye tissue, comprising:
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a light source for generating a beam of light;
a delivery system for focusing the beam onto the eye tissue; and
a controller for controlling the light source and the delivery system such that the light beam is focused at multiple focal points in the eye tissue at multiple depths within the eye tissue. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46)
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45. An ophthalmic surgical system for treating eye tissue, comprising:
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a light source for generating a beam of light having at least a first pulse of light and a second pulse of light;
a delivery system for focusing the beam onto the eye tissue; and
a controller for controlling the light source and the delivery system such that the first and second pulses of light are consecutively focused onto the eye tissue, wherein the first pulse creates a plasma at a first depth within the eye tissue, and wherein the second pulse is arrives before the plasma disappears and absorbed by the plasma to extend the plasma in the eye tissue along the beam. - View Dependent Claims (47, 49, 50)
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48. An ophthalmic surgical system for treating eye tissue, comprising:
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a light source for generating a beam of light;
a delivery system for focusing the beam onto the eye tissue, the delivery system including at least one of a non-spherical lens, a highly focused lens with spherical aberrations, a curved mirror, a cylindrical lens, an adaptive optical element, a prism, and a diffractive optical element; and
a controller for controlling the light source and the delivery system such that an elongated column of focused light within the eye tissue is created.
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Specification