Method for patterned plasma-mediated modification of the crystalline lens
First Claim
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1. A method of treating a cataractous lens of a patient'"'"'s eye, comprising:
- a. generating a light beam;
b. deflecting the light beam using a scanner to form a treatment pattern of the light beam;
c. delivering the treatment pattern to the lens of the patient'"'"'s eye to create a plurality of cuts in the lens in the form of the treatment pattern within the lens and segment the lens tissue into a plurality of patterned pieces, the treatment pattern comprising;
a plurality of outer laser incision planes each extending along a length between a posterior cutting limit within the lens and an anterior surface of the lens capsule, wherein the plurality of the outer laser incisions are inclined so as to create a treatment zone in the lens having an anterior portion with a lateral cross-section larger than a lateral cross-section of a posterior portion;
d. mechanically breaking the lens into a plurality of pieces along the cuts; and
e. removing the plurality of lens pieces from the patient'"'"'s eye.
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Abstract
A method of treating a lens of a patient'"'"'s eye includes generating a light beam, deflecting the light beam using a scanner to form a treatment pattern of the light beam, delivering the treatment pattern to the lens of a patient'"'"'s eye to create a plurality of cuts in the lens in the form of the treatment pattern to break the lens up into a plurality of pieces, and removing the lens pieces from the patient'"'"'s eye. The lens pieces can then be mechanically removed. The light beam can be used to create larger segmenting cuts into the lens, as well as smaller softening cuts that soften the lens for easier removal.
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Citations
19 Claims
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1. A method of treating a cataractous lens of a patient'"'"'s eye, comprising:
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a. generating a light beam; b. deflecting the light beam using a scanner to form a treatment pattern of the light beam; c. delivering the treatment pattern to the lens of the patient'"'"'s eye to create a plurality of cuts in the lens in the form of the treatment pattern within the lens and segment the lens tissue into a plurality of patterned pieces, the treatment pattern comprising; a plurality of outer laser incision planes each extending along a length between a posterior cutting limit within the lens and an anterior surface of the lens capsule, wherein the plurality of the outer laser incisions are inclined so as to create a treatment zone in the lens having an anterior portion with a lateral cross-section larger than a lateral cross-section of a posterior portion; d. mechanically breaking the lens into a plurality of pieces along the cuts; and e. removing the plurality of lens pieces from the patient'"'"'s eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of treating a cataractous lens of a patient'"'"'s eye, comprising:
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a. generating a light beam; b. deflecting the light beam using a scanner to form a treatment pattern of the light beam; c. delivering the treatment pattern to the lens of the patient'"'"'s eye to create a plurality of cuts in the lens in the form of the treatment pattern so as to segment the lens tissue into a plurality of patterned pieces, the treatment pattern comprising a plurality of outer laser incision planes each extending along a length between a posterior cutting limit within the lens and an anterior surface of the lens capsule, wherein the plurality of the outer laser incisions are inclined so as to create a treatment zone of the lens having an anterior portion with a lateral cross-section larger than a lateral cross-section of a posterior portion; d. separating the plurality of patterned pieces; and e. removing the plurality of patterned pieces from the patient'"'"'s eye. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of treating a cataractous lens of a patient'"'"'s eye, comprising:
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a. operating an imaging system to acquire image signals from targeted structures of the patient'"'"'s lens, wherein one or more parameters of a treatment zone positioned within the lens are determined at least in part based on the imaging; b. deflecting a generated light beam using a scanner to form a treatment pattern of the light beam; c. delivering the treatment pattern to the lens of the patient'"'"'s eye to create a plurality of cuts in the lens in the form of the treatment pattern so as to segment the lens tissue into a plurality of patterned pieces, the treatment pattern comprising; a plurality of outer laser incision planes each extending along a length between a lower axial cutting boundary within the lens and an upper axial cutting boundary, wherein the plurality of the outer laser incision planes are inclined such that the treatment region comprises an anterior portion with a lateral cross-section larger than a lateral cross-section of a posterior portion; and
a plurality of intersecting inner incision planes segmenting lens tissue within the treatment zone;d. separating the plurality of patterned pieces; and e. removing the plurality of patterned pieces from the patient'"'"'s eye. - View Dependent Claims (19)
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Specification