Acrylic Lenses in the Anterior Chamber

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Abstract
The correction of certain refractive errors, either intrinsic or resulting from removal of the lens, by insertion of a plastic lenticulus within the eye has been attempted by several ophthalmic surgeons. The first to report the use of intraocular acrylic lenses after monocular cataract extractions was Ridley,1in 1952. His purpose was to overcome the disadvantages of correcting the aphakic eye by spectacles, which include magnification of the image, distortion and displacement of images outside the optic center, and marked limitation of the fields of vision. He obtained binocular vision by inserting an intraocular lens behind the iris (Fig. 1A). The lens he used was made of polymethyl methacrylate, fashioned slightly smaller than the human lens. It was 8.35 mm. in diameter and 2.4 mm. in thickness; the radius of curvature of the anterior surface was approximately 9 mm., and that of the posterior surface was 5.3 mm.

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