Coopervision International Holding Company, LP

Asahikasei Aime Co., Ltd.

Tsuneo Hoki

Junichi Iwata

Seiichirou Ikawa

Arthur Back

Seiichiro Ikawa

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

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.

Growing community of inventors

Nobeoka, Japan

Tsuneo Hoki