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Direct visualization system for glaucoma treatment

  • US 10,085,633 B2
  • Filed: 04/18/2013
  • Issued: 10/02/2018
  • Est. Priority Date: 04/19/2012
  • Status: Active Grant
First Claim
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1. A method of measuring an eye, comprising:

  • forming an incision in a cornea of the eye into an anterior chamber of the eye;

    introducing through the incision a distal end of a first device configured for measuring an anatomical feature of the eye, the first device comprising a handle with a wire extending out of a distal end of the handle and a distal end of the wire configured to be pressed against ocular tissue in the eye, the wire including a first series of symbols positioned along a length of the wire, the first device further comprising a spring coupled to a proximal end of the wire which biases the wire toward a distally outward direction relative to the handle, wherein the wire moves relative to the handle solely as a result of an applied force by the ocular tissue against the distal end of the wire, and wherein the wire extends along a longitudinal axis, and where the distal end of the wire has a transverse dimension relative to the longitudinal axis that is greater than a transverse dimension relative to the longitudinal axis at a location of the wire proximal to the distal end of the wire;

    passing the distal end of the wire through the incision and across the anterior chamber of the eye;

    positioning the distal end of the wire against the ocular tissue below a scleral spur and above an iris such that the applied force is generated between the ocular tissue and the distal end of the wire, wherein the applied force overcomes a spring force of the spring such that solely the applied force causes the wire to retract proximally into the handle; and

    measuring the anatomical feature of the eye by identifying one or more symbols of the first series of symbols along the length of the wire relative to an anatomical landmark in the eye;

    withdrawing the first device from the eye, the first device being designed for only the introducing, passing, positioning, measuring, and withdrawing steps; and

    inserting an ocular implant coupled to a second device through the incision, the second device comprising an implant delivery applier that includes a second series of symbols that correspond to the first series of symbols positioned along the length of the wire.

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