Silicone hydrogel contact lenses

Details Silicone hydrogel contact lenses Silicone hydrogel contact lenses

G - Physics

02

B

G02B 1/04 (2006.01)

Patent

CA 2577899

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.

L'invention concerne des lentilles de contact compatibles d'un point de vue ophtalmique, qui comprennent des corps de lentille se plaçant sur la cornée d'un oeil humain ou animal. Le corps des lentilles est fait d'une matière polymère hydrophile contenant de la silicone. Ces corps présentent des caractéristiques de perméabilité à l'oxygène, de teneur en eau, de mouillabilité de surface, de souplesse et/ou de conception telles que l'utilisateur des lentilles peut les porter même pendant son sommeil. On peut porter ces lentilles chaque jour, y compris la nuit, ou pendant plusieurs jours, p. ex. environ trente jours, sans qu'il soit nécessaire de les enlever ou de les nettoyer.

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