Coopervision International Holding Company, LP

Asahikasei Aime Co., Ltd.

Junichi Iwata

Tsuneo Hoki

Seiichiro Ikawa

Seiichirou Ikawa

Arthur Back

Hiroyuki Ueyama

Silicone hydrogel contact lenses are provided which have reduced modulus and contact angle properties, and which have acceptable wettabilities for use in daily wear and extended or continuous wear applications.

Silicone hydrogel contact lenses

A hydrogel soft contact lens which is superior in extended-wearability, lens movement, wear comfort, and which does not adhere to a cornea when worn is provided. The lens provided can be a silicone hydrogel contact lens which contains units of hydrophilic siloxane monomers and amide-group-containing monomers having an N-vinyl group.

Long-wearable soft contact lens

Ophthalmically compatible contact lenses include lens bodies configured for placement on a cornea of an animal or human eye. The lens bodies are made of a hydrophilic silicon-containing polymeric material. The lens bodies have oxygen permeabilities, water content, surface wettabilities, flexibilities, and/or designs to be worn by a lens wearer even during sleep. The present lenses can be worn on a daily basis, including overnight, or can be worn for several days, such as about thirty days, without requiring removal or cleaning.

Silicone hydrogel contact lens

PROBLEM TO BE SOLVED To provide an ophthalmic lens, which can be more safely worn, that is, to provide a material, which is transparent and has high oxygen permeability and a high hydrophilic property, and to provide a novel monomer to be a raw material thereof. SOLUTION A hydrophilic polysiloxane macromonomer contains polyoxyethylene as a hydrophilic side chains in a polysiloxane main chain, wherein transparency, oxygen permeability, and hydrophilic properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains.

Hydrophilic polysiloxane macromonomer, and production and use of the same

A hydrophilic polysiloxane macromonomer containing polyoxyethylene as a hydrophilic side chains pendant to a polysiloxane main chain for imparting transparency, oxygen permeability, and hydrophilic properties to a contact lens is disclosed. The properties of the material are controlled by regulating the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chains, and the number of the side chains.

The present invention relates to a soft contact lens, and provides a contact lens which shows small and stable contact angle to water at its surface in water as well as in air, little deposition in wearing, high oxygen permeability, no adhesion of lens to a cornea and superior extended-wearing characteristics. The present invention provides a hydrogel soft contact lens which has contact angle at a lens surface in a range of 10-50&#xb0; by the captive bubble method in water and 30-90&#xb0; by the sessile drop method in air, oxygen permeability of not less than 30 and water content of not less than 5%, and also a hydrogel soft contact lens consisting of a polymer comprising a hydrophilic siloxanyl monomer shown by a specified general formula.

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Nobeoka, Japan

Junichi Iwata