Matches 251 - 300 out of 371 < 1 2 3 4 5 6 7 8 >
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5070166 Wettable, flexible, oxygen permeable, contact lens containing polyoxyalkylene backbone units, and use thereof  
Contact lenses which are optically clear, wettable, flexible, and of high oxygen permeability in the aqueous ocular environment of use, of a polymer containing polyoxyalkylene backbone units are...
5057585 Oxygen-permeable article of fluorinated hydrocarbon group-grafted (meth)acrylate polymers  
Hydrophilic gelled crosslinked polymers comprising as an essential constituent monomer component a (meth)acrylate ester monomer having a fluorine-substituted hydrocarbon group containing at least...
5049321 Method for forming coated plastic optical elements  
A method for coating a plastic lens element including applying a coating composition consisting substantially of reactants having at least triacrylate functionality, a photo-initiator and a...
5039459 Method of forming shaped hydrogel articles including contact lenses  
Shaped hydrogel articles such as soft contact lenses are prepared by (1) molding or casting a polymerization mixture comprising: (a) a monomer mixture comprising a major proportion of a hydrophilic...
5039769 Wettable, flexible, oxygen permeable, substantially non-swellable contact lens containing polyoxyalkylene backbone units, and use thereof  
Contact lenses which are optically clear, wettable, flexible, of high oxygen permeability and substantially non-swellable in the aqueous ocular environment of use, of a polymer containing...
5035884 Methylene pyrrolidone copolymers for contact lens and pharmaceutical preparations  
A new series of copolymers which are useful as coatings for solid dosage forms, for transdermal devices, for wound dressing materials, and for contact lenses. Also disclosed are methods for...
5036115 Optical lens system incorporating melanin as an absorbing pigment for protection against electromagnetic radiation  
Melanin is used as the absorbing pigment for radiation protective eyeware. Thus, a melanin-plastic copolymer was formed by adding a catalyst (benzoyl peroxide) to the liquid monomer, diethylene...
5013496 Process for molding a highly-refractive plastic lens  
A process for producing a plastic lens having a high refractive index and profile regularity which includes forming a mixture of one or more of sulfur-containing aromatic polyisocyanate compounds,...
5002978 Crosslinked copolymers and ophthalmic devices amde from vinylic macromers containing perfluoropolyalkylether and polyalkylether segments and minor amounts of vinylic comonomers  
The instant invention relates to crosslinked copolymers of (a) vinylic macromers containing perfluoropolyalkylether and polyalkylether segments with (b) minor amounts of vinylic comonomers and...
4994504 Vinylic macromers containing perfluoropolyalkyl ether and polyalkyl ether segments, polymers and ophthalmic devices made therefrom  
The instant invention relates to vinylic macromers containing perfluoropolyalkylether and polyalkylether segments, polymers and ophthalmic devices such as intraocular implants and contact lenses...
4980089 Photochromic spiropyran compounds  
Described are a series of novel benzospiropyran and naphthospiropyran compounds in which a norcamphor group (or its alkyl-substituted homologues) or a tricyclodecane group (or its alkyl-substituted...
4975328 Process for producing polyurethane lens  
A polyurethane lens is produced by (a) adding to a monomer mixture comprising a polyisocyanate and a polythiol, a phosphoric acid ester represented by the general formula (I) ##STR1## (R 1 and R 2...
RE33477 Ultraviolet absorbing hydrophilic corneal contact lenses  
This invention relates to ultraviolet absorbing lenses, particularly corneal contact lenses, comprising a polymeric shaped body having an ultraviolet absorber dispersed substantially uniformly...
4966924 Soft contact lens and method of manufacturing the same  
A soft contact lens of PVA having a tensile strength of not less than 10 kg/cm 2 , a water content ranging from 40 to 95% by weight, a visible light transparency of not less than 90%, and an oxygen...
4957985 Fluorine-substituted hydrocarbon group grafted (meth)acrylate polymers  
Hydrophilic gelled crosslinked polymers comprising as an essential constituent monomer component a (meth)acrylate ester monomer having a fluorine-substituted hydrocarbon group containing at least...
4946470 Hard intraocular lens with the shape memory  
A hard introcular lens having shape memory consisting of a copolymer having a glass transition temperature (T g ) from 40° C. to 60° C. that is deformable into the shape of a straight or bent rod...
4946450 Glucan/collagen therapeutic eye shields  
A therapeutic eye shield comprising from about 50% to about 80% collagen and from about 20% to about 50% glucan is disclosed. The collagen acts as a drug delivery system for the therapeutic agent,...
4931279 Sustained release formulation containing an ion-exchange resin  
A sustained-release polymeric hydrogel dosage form useful for topical, systemic or transdermal administration of a medicinal agent comprising a cross-linked, polymerized hydrophilic polymer, an...
4921884 Hydroxy-substituted polymeric shaped hydrogel article  
Articles including ophthalmic devices prepared by a process comprising the steps of thermoforming a polymer comprising units derived from an ethylenically-unsaturated monomer bearing at least one...
4904421 Soft ocular lens and method for its preparation  
A method for preparing a soft ocular lens, which comprises machining a machinably hard polymer blend body composed essentially of a soft lens material and a hard polymer into an ocular lens shape,...
4904708 Method of manufacturing soft contact lens material  
Hydrophilic monomers in a supercooled, transparent state, are polymerized in the presence of water. The polymers have low levels of residual monomers and exhibit good mechanical strength. The...
4900764 Hydrophilic materials  
Hydrophilic polymers of the type suitable for use in making contact lenses and having a wide range of controllable properties including strength and gas permeability are formed from acrylonitrile...
4895896 Contact lens having improved eye compatibility  
Contact lens comprising an eye-compatible surface on which monoclonal antibodies or fragments of antibodies are immobilized, the N-terminal ends of which are directed against mucous substances of...
4886866 Contact lenses based on biocompatible polyurethane and polyurea-urethane hydrated polymers  
Hydrophilic polymeric soft contact lenses which are characterized by their biocompatibility and resistance to nonspecific protein adsorption. At least 75%, preferably at least 80%, of the...
4871785 Clouding-resistant contact lens compositions  
Contact lens compositions containing monomers or cross-linking materials which result in satisfactory moisture content but lowered protein absorption capability are described. Lenses are...
4866148 Hydrophilic copolymers, the use thereof as biomedical materials and contact-optical articles produced therefrom  
The invention relates to new cross-linked copolymers of N-vinyl pyrrolidone, N-alkyl-N-vinyl carboxylic acid amides, methacrylates and optionally further copolymerizing monomers of a specific...
4859719 Polymer blends with high water absorption  
Miscible blends of slid, non-crosslinked polymers are disclosed. The blends comprise from 2 to 95 parts by weight of a water-insoluble, hydrophobic polymer and, correspondingly from 98 to 5 parts...
4857606 Wettable, flexible, oxygen permeable, substantially non-swellable contact lens containing polyoxyalkylene backbone units, and use thereof  
Contact lenses which are optically clear, wettable, flexible, of high oxygen permeability and substantially non-swellable in the aqueous ocular environment of use, of a polymer containing...
4851471 Process for manufacturing photochromic articles  
A direct casting process for manufacturing a shaped synthetic plastic article, such as an ophthalmic lens, which has photochromic properties, the process comprising incorporating a photochromic...
4818801 Ophthalmic device comprising a polymer of a telechelic perfluoropolyether  
Ophthalmic devices, such as contact lenses, of polymers of telechelic perfluorinated polyether monomers, and compositions for making such devices are disclosed. The devices possess improved oxygen...
4808709 Matrix polymer and its preparation  
A cationic dextran compound matrix-copolymer obtained by reacting with a polymerizable unsaturated acid or a polymerizable unsaturated acid and olefin compound a dextran derivative which is...
4795461 UV absorbing lens material  
The invention is concerned with a UV absorbing plastics material to be used in intraocular lenses, said material having been produced by means of incorporating in the plastics monomer mixture,...
4788227 Contact lens formed from a hydrogel fundamental material  
An optically transparent hydrogen forming material comprising a copolymer of an optically transparent polyester having a molecular weight of 1,000 to 100,000 and at least one of polymerizable group...
4761438 Soft contact lens  
A soft contact lens having a high water content, high mechanical strength and good dimensional stability is disclosed, which is made of a copolymer comprised of at least one monomer represented by...
4746691 Method of pigmenting water-absorbable plastics  
A colored opacified plastic material containing an organic binder, at least one pigment, a hydrophilic polymerizable plastic material and a cross linking agent is disclosed together with a method...
4745158 Highly water-absorptive optical material  
A highly water-absorptive optical material obtained by saponification for hydrophilic treatment of a copolymer composed essentially of: (A) from 2 to 30 parts by weight of a (meth)acrylate...
4742136 Optical plastic material  
An optical plastic material which is a three-dimensional polymer comprising a structural unit of the following formula (1), (2), (3) or (4) is disclosed: ##STR1##
4719248 Ultraviolet blocking agents for contact lenses  
Novel ultraviolet absorbing compounds useful in contact lenses and methods for curing contact lenses containing UV absorbers are disclosed.
4713244 Sustained-release formulation containing an amino acid polymer with a lower alkyl (C.sub.1 -C.sub.4) polar solvent  
A sustained-release polymeric hydrogel dosage form useful for topical, systemic or transdermal administration of a medicinal agent comprising a cross-linked, polymerized hydrophilic polymer, an...
4699934 Soft contact composition and method  
A soft contact lens is provided by: pouring an excess amount of an original solution for producing a soft contact lens into a concave mold; placing a convex mold on said concave mold and...
4695399 Method of making a contact lens material which may be identified by colored fluorescence  
A method of making contact lens materials which are identifiable from similar contact lens materials. This is done by selecting a fluorescent colored soluble organic fluorescent dye in solid state...
4690993 p-(2-Hydroxy hexafluoroisopropyl) styrene [HFIS] monomer for ophthalmic applications  
Copolymer compositions are prepared from a novel class of siloxane monomers in combination with hydroxyperfluoroalkylstyrenes, preferably p-(2-hydroxy hexafluoroisopropyl)sytrene [HFIS] monomer for...
4687816 Surface treatment of soft contact lenses  
A process for the treatment of a soft contact lens, to increase its resistance to the deposition thereon and diffusion and accumulation therein of substances which will promote its clouding and...
4668240 Pigment colored contact lenses and method for making same  
Colored contact lenses are produced by providing a contact lens constructed of polymer and coating at least a portion of the lens with coloring substance and binding polymer. The lens and binding...
4668446 Process for making soft contact and intraocular lenses with an esterifiable carboxyl-containing polymer  
A process of making soft lenses from an esterifiable, partially cross-linked carboxyl-containing polymer, and a method of attaching a haptic to a swellable intraocular lens. The soft contact lenses...
4665144 Material for contact lenses  
This invention provides a material for contact lenses comprising a polymer having 10 to 100 5 by weight of a structural unit represented by the formula ##STR1## wherein R is (CH 2 ) l R 1 or --CH...
4650616 Process for making a soft contact lens of natural proteinaceous polymer(s)  
A starting solution comprising one or more noncrystalline natural proteinaceous polymers of animal or vegetable origin is molded and gelled in a lens shaped mold and then removed from the mold....
4647282 Material for ocular prosthetics  
An optical prosthetic device made from a material based on silicone compounds is a cured composition resulting from vulcanization of a mixture of...
4640965 Hydrogel compositions using p-(2-hydroxyhexafluoroisopropyl) styrene as a comonomer  
Hydrogel compositions characterized by a copolymer composition which includes a hydroxyfluoroalkylstyrene as a comonomer. The preferred comonomer compound is...
4638025 Method of pigmenting water-absorbable plastic and products therefrom  
A colored opacified plastic material containing an organic binder, at least one pigment, a hydrophilic polymerizable plastic material and a cross linking agent is disclosed together with a method...
Matches 251 - 300 out of 371 < 1 2 3 4 5 6 7 8 >