Method and apparatus for performing an accurately sized and placed anterior capsulorhexis

Abstract

Methods and devices of performing an improved anterior capsulorhexis, wherein the capsulorhexis is more precisely sized, shaped and positioned on the eye lens capsule are described. A capsulorhexis, also referred to as a capsulotomy, is a procedure for creating an aperture in a lens capsule by making an incision. The incision should be of a certain size and shape and be positioned on the capsule as determined by the surgeon. An image projection device is used to project a visible target image on the anterior or posterior of the lens capsule as a guide or trackable image for the surgeon. Before a procedure begins, a target image is configured by a surgeon to have a desired size and shape. During the procedure, target image is projected onto a desired location on the surface of lens capsule. In another preferred embodiment, a template is configured to a desired shape and size by a surgeon to correspond to the appropriate capsulorhexis. Once configured, the template is inserted into the anterior chamber, using an appropriate delivery mechanism if necessary. The template is used to make a physical impression or mark on the lens capsule wherein the mark closely corresponds to the intended incision.

Dependencies are inferred from the claim text.