Abstract: An improved method for cast molding RGP contact lenses employs mold sections injection molded from a specific class of thermoplastic, polyolefin resins.

Abstract: A sunglass has a multilayer coating on its concave (rear) surface that comprises a absorbing layer and at least one composite layer for reducing transmittance of UV radiation. Reflection of visible light at the concave surface is minimized.

Abstract: Organosilicon-containing materials are useful in articles such as biomedical devices, including contact lenses.

Abstract: Novel siloxane macromonomers are disclosed which can be copolymerized with hydrophilic monomers or hydrophobic monomers to prepare polymeric materials useful as biomedical devices. The copolymers made from hydrophilic monomers exhibit good oxygen permeability and are particularly suitable for use in contact lenses.

Abstract: Novel fluorosiloxane-containing monomers are disclosed which are especially useful for the preparation of biomedical materials such as contact lenses.

Abstract: Polymeric materials comprising novel wetting agents such as 2-isopropenyl-4,4-dimethyl-2-oxazolin-5-one, 2-vinyl-4,4-dimethyl-2-oxazolin-5-one, and the like.

Abstract: A manual switch (2) has a switching plate (9), which can be tilted to several sides and is mounted on a mounting (10). This switching plate (9) can move with star-shaped actuating arms that correspond to the contact arms of a contact spring (7) in the direction of a printed circuit board (6), so that it can close a circuit by means releasably, lockingly engaging the selected actuating arm against a respective contact arm and an electric contact on the printed circuit board. At any switch position one can switch back directly into the zero position by pressing an adjusting arm (13) which moves the switching plate (9) back into its non-tilted position.

Abstract: Improved methods for modifying target surfaces through ablation which result in a reduction of ablation debris redeposition on the target surface are disclosed.

Abstract: Novel fumarate- and fumaramide-containing monomers are disclosed which are especially useful in the preparation of biocompatible devices, especially contact lenses.

Abstract: A mold assembly includes first and second mold sections having respective first and second mold cavity defining surfaces, the first mold cavity defining surface terminating in an encircling peripheral rim and the second mold cavity defining surface terminating in a deformable peripheral annulus disposed at a diameter corresponding to the rim, and cooperating tapers depending from each of the first and second molds for relatively centering the molds.

Abstract: A preservative system for ophthalmic solutions, particularly contact lens solutions, comprises:(a) chlorhexidine or a water-soluble salt thereof; and(b) polyhexamethylene biguanide or a water-soluble salt thereof.

Abstract: Improved silicone-containing hydrogels with enhanced wettability comprising at least one silicone-containing prepolymer, and an equimolar amphoteric mixture of acid-containing comonomers and amine-containing comonomers are herein disclosed.

Abstract: A composition and method for cleaning and disinfecting of contact lenses that employ an electrical field applied to a lens that causes contaminating deposits to migrate therefrom is described. The composition of the invention includes a pair of component materials having different electrochemical potentials wherein the materials are substantially contained in a form wherein each material remains sufficiently physically separated when in contact with opposite sides of the lens such that the difference in electrochemical potential between the two materials is sufficient to cause charged contaminating deposits to migrate from the lens. The method of the invention requires placing a contaminated lens between a pair of component materials having different electrochemical potentials wherein physical separation is maintained, preferably, by including one of the components in a gel while the other component is in solution or another gel.

Abstract: A novel class of compounds are disclosed which may be used as novel crosslinking agents for acrylic-containing, vinyl-containing and/or styrene-containing hydrophilic monomers to prepare novel UV-curable hydrophilic copolymers suitable for use as biomedical articles, especially contact lenses.

Abstract: Contact lenses, particularly adapted to correct presbyopic vision, having a multiaspheric back surface having a central zone, a marginal zone, and a peripheral zone, each of the zones being constituted by portions of second-order surfaces of revolution other than spherical, wherein the axial edge lift of the central and marginal zones increase toward the edge of the lens, the transition from the central to the marginal zone is tangential, and the axial edge lift of the peripheral zone decreases toward the edge of the lens.

Abstract: Fumaramide-containing monomers are disclosed which are especially useful in the preparation of biocompatible devices, especially contact lenses.

Abstract: A non-alcoholic, aqueous mouthwash composition is provided which contains a dispersion system containing a non-ionic surfactant selected from an hydrogenated castor oil and a polyoxyethylene polyoxypropylene block copolymer having about 50% to about 90% ethylene oxide, a humectant and a cationic antimicrobial agent. The composition exhibits a homogeneous, uniform appearance and a high degree of bacterial efficacy.

Abstract: Novel siloxane macromonomers are disclosed which can be copolymerized with hydrophilic monomers or hydrophobic monomers to prepare polymeric materials useful as biomedical devices. The copolymers made from hydrophilic monomers exhibit good oxygen permeability and are particularly suitable for use in contact lenses.

Abstract: An electric toothbrush having in its slip-on brush a piston is disclosed, which is set rotating by a motor shaft projecting out of the handle segment. This piston exhibits a lifting cam, by means of which it effects an axial motion relative to the motor shaft in the slip-on brush. This axial motion causes a reciprocating motion of a toothed rack, which sets the bristle tufts of the toothbrush rotating.