Method and apparatus for creating ocular surgical and relaxing incisions

  • US 10,709,548 B2
  • Filed: 03/25/2015
  • Issued: 07/14/2020
  • Est. Priority Date: 03/13/2007
  • Status: Active Grant
First Claim
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1. A scanning system for treating target tissue in a patient'"'"'s eye, comprising:

  • a) an ultrafast laser source configured to deliver a laser beam comprising a plurality of laser pulses;

    b) an Optical Coherence Tomography (OCT) device configured to generate signals which may be used to create an image of the cornea and limbus of the eye of the patient;

    c) a scanner configured to focus and direct the laser beam in a pattern within the cornea or limbus to create incisions therein; and

    d) a controller operatively coupled to the laser source and scanner programmed to determine a treatment pattern based upon the signals from the OCT device, the treatment pattern forming a cataract incision in the cornea that provides access for lens removal instrumentation to a crystalline lens of the patient'"'"'s eye and one or more relaxation incisions in the cornea or limbus, wherein the cataract incision has an arcuate extent of less than 360 degrees in a top view, wherein the cataract incision includes a bevel shape in a cross-sectional view, the bevel shape including a first segment and a second segment which intersect each other at an angle, the cataract incision being entirely located in the cornea and intersecting both an anterior surface and a posterior surface of the cornea, and to control the scanner to scan the position of the laser beam in the treatment pattern.

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