Abstract: The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocular lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 mm optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.

Abstract: The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocular lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 mm optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.

Abstract: A vent assembly for electrical equipment comprising a panel for covering the equipment in which the panel has at least one elongated slot extending therethrough, a front side, and a rear side. A box member is secured to the rear side of the panel over the slot with the box member having a first elongated plate extending outwardly from the rear side of the panel on one side of the slot and an elongated second plate extending from an outer end of the first plate over the slot at an angle to the first plate. The second plate has an outer edge. An elongated flange extends from the rear side of the panel on the other side of the slot at an angle to the panel which is generally directed toward the box member. The flange has an outer edge and is of sufficient width to intersect a straight line taken from the side of the slot nearest the box member to the outer edge of the second plate.