Abstract: An apparatus for treating glaucoma which can be mounted directly onto the outer surface of the eyeball with a portion of the apparatus to connect with the interior of the eyeball. The apparatus includes a plastic block including a plurality of tiny through openings. Liquid from the interior of the eyeball is to seep through the openings in the plastic block to relieve excess pressure within the eyeball. This leakage is to occur only when the pressure level within the eyeball exceeds a predetermined level.

Abstract: The method of making a plastic article having a plurality of small openings which utilizes a plurality of thin plastic tubular members combined together in a side-by-side relationship forming an assemblage. Each tubular member has an exterior layer of a first plastic and a core of a second plastic. The second plastic is to be dissolvable by a solvent. This assemblage is passed through a furnace with the result that the assemblage is drawn into a thin filament. Once cooled, the thin filament is cut into segments of a desired length and these segments are placed within a solvent bath for a sufficient period of time in order to affect complete removal of the second type of plastic resulting in producing of a plurality of small, through openings within each section.

Abstract: A posterior chamber lens including a plano-convex polymethylmethacrylate (PMMA) optic and two smooth, monofilament, curved, flexible loops attached to and extending from the optic. Each of the loops, also of PMMA, is angulated 10.degree. anteriorly from the plano surface of the optic. The optic is reversed such that the convex surface is posterior and is provided with positioning holes. The PMMA decreasing radius loops and optic provide for a flexible, lightweight and edge-thin lens and loops. The PMMA loops' angulation and plano-convex optic design vault the lens away from the iris. The positioning holes are situated at 12 and 6 o'clock positions and are of a predetermined desired size. A second embodiment of the PMMA lens includes PMMA loops which are substantially parallel to the planar surface of the lens. A third embodiment of the PMMA lens includes PMMA loops which are 10.degree. anteriorly from the convex surface of the optic.