Abstract: The present invention is a system for controlling astigmatism during cataract surgery in which a microscope, having an eyepiece, a tube and an objective lens and having a magnification power of 100 times, is used which includes a length of suture material which is adapted to close a corneal incision and which is cylindrically shaped. The length of suture material has a plurality of parallel lines, which are spaced equally at very close distances in the range of 5,000 to 20,000 lines per inch and which are disposed orthogonally to the longitudinal axis on the cylindrical surface of said length of suture material. When the strain in the length of suture material is in the range of 0.1 percent to 10.0 percent, a reticule is disposed in the microscope adjacent to the objective lens thereof.

Abstract: The present invention is an intraocular lens for implantation into the posterior chamber of a human eye. The intraocular lens includes a plano-convex lens, which is formed from an optical material that is suitable for an implantable lens. The plano-convex lens is adapted to be inserted into the posterior chamber of the human eye within the capsular membrane thereof. The intraocular lens also includes a first supporting loop and a second supporting loop, which are formed from a material that is suitable for implantation into the eye, mechanically coupled to the peripheral edge of plano-convex lens and disposed at an angle in the range of 0.degree. to 25.degree. to the plane surface of the plano-convex lens so that their end portions are below the plane surface of the plano-convex lens. The second supporting loop has a notch which is disposed between the peripheral edge of the plano-convex lens and its end portions so that a temporary securement to the iris of the human eye may be accomplished.