Method Of 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.
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Citations
27 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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Specification