Ophthalmic lenses based on amorphous fluoropolymers

Details Ophthalmic lenses based on amorphous fluoropolymers Ophthalmic lenses based on amorphous fluoropolymers

C - Chemistry, Metallurgy

08

F

402/248

C08F 224/00 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2036782

V-17969/1+2/=/TIT 12 Ophthalmic lenses based on amorphous fluoropolymers Abstract The invention relates to ophthalmic lenses, such as contact lenses or intraocular lenses, which essentially consist of an amorphous copolymer which comprises units of theformula I Image (I) and units of the formula II -CF2-CF2- (II) in which a and b independently of one another are zero, one or two, and in which R1 and R2 independently of one another are perfluorinated lower alkyl. They have a combination of high hardness and oxygen permeability. They moreover have such a high glass transition point that they can be autoclaved. Their crystallinity and their refractive index are furthermore decidedly low.

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