摘要:
The present invention is based on the unexpected finding that the combination of a carboxylate containing anionic polymer, of molecular weight greater than about 1000 daltons, with cleaning agents, provides improved contact lens cleaning preparations. The present invention includes contacting a soiled contact lens with an aqueous solution comprising an anionically charged polymer and a surfactant or surfactant combination selected from the classes of nonionic surfactants, anionic surfactants, and amphoteric surfactants.
摘要:
The present invention is directed to an ophthalmic solution for the treatment of contact lenses while worn in the eye. In particular, the composition contains ethoxylated glucose derivative, tyloxapol, and a polyoxyethylene-polyoxypropylene nonionic surfactant. The ophthalmic solution containing such a combination of components can be applied, in the form of drops, to the eye or to contact lens in the eye. In one embodiment of the invention, the composition is used for reducing unwanted lipid or protein deposition on extended-wear lenses, including lenses made from relatively hydrophobic materials such as silicon hydrogels.
摘要:
A composition for cleaning and wetting contact lenses comprises a polyethyleneoxide-containing material having a hydrophile-lipophile balance (HLB) of at least about 18, a surface active agent having cleaning activity for contact lens deposits, and a wetting agent.
摘要:
Copolymers useful as contact lens materials are the polymerization product of a mixture comprising:(a) an itaconate;(b) a compound represented by formula (I): ##STR1## wherein: each A is independently an activated unsaturated radical;each R is independently selected from the group consisting of a C.sub.1 -C.sub.12 monovalent hydrocarbon radical, a C.sub.1 -C.sub.12 monovalent hydrocarbon radical containing ether linkages, a halogen-substituted C.sub.1 -C.sub.12 monovalent hydrocarbon radical, and a halogen-substituted C.sub.1 -C.sub.12 monovalent hydrocarbon radical containing ether linkages;each R' is independently a C.sub.1 -C.sub.22 divalent hydrocarbon radical; andn averages about 15 to about 50;(c) an ethylenically unsaturated organosiloxane monomer; and(d) a hydrophilic monomer.
摘要:
A hard contact lens formed of a polymer having silicon and chlorine incorporated therein is exposed to a solution containing an admixture, an alkylphenyl polyether alcohol surfactant, a second surfactant which is anionic and a third surfactant having a preservative action and the solution is rubbed against the contact lens to remove surface deposits thereon.
摘要:
Multifunctional organopolysiloxane resin systems are provided whose starting materials comprise a reactive vinyl containing silane, a disubstituted silane and a trisubstituted silane hydrolyzed together to form a resin system. The preferred material of the resin system has a viscosity of from 7 to 70 centistokes at 25.degree. C. The preferred material is in the form of a contact lens and also contains an ester and a hydrophilic agent.
摘要:
An improved orthopaedic cement of the type used to, e.g. position and hold prosthetic devices in place within bone cavities after surgical repair of the bone system. The cement is characterized by markedly increased toughness and resistance to fracture due to the rubbery, or elastomeric, nature of the included polyacrylate resin phase.
摘要:
Improved contact lens materials are obtained from copolymers containing a siloxanyl alkyl ester vinyl monomer by exposing the materials to high energy radiation thereby reducing the amount of unreacted monomer and residual contaminants.
摘要:
A contact lens solution is provided for wetting, soaking and lubricating of hard contact lenses, particularly those carrying an ionic charge. The solution contains an ionic polymer of cationic or anionic charge that interacts with an oppositely charged surface of a contact lens forming an interfacial polyelectrolyte complex. This polyelectrolyte complex provides increased, long lasting lens wettability leading to a cushioning and lubricating effect with the eyelid and the cornea.