Ophtec B.v.

Hendrik Smit

Theodorus Adrianus Cornelius Flipsen

Miriam Adrienne Lambertina Verbruggen

Eelco Christoffer Brian Van Der Flier

Joke Geesje Hagting

The present invention discloses to a high refractive index polysiloxane (co)polymer comprising refractive index modifying groups chemically bonded in clustered configuration to the polysiloxane backbone. The invention also discloses methods for the preparation of such high refractive index polysiloxane (co)polymers A polysiloxane according to the invention is very suitable for use as a material for the production of intra-ocular lenses.

High refractive index flexible silicone

The invention relates to transparent polymer material containing a dye which absorbs light above 400 nm. It furthermore relates to methods for producing the polymer material and a lens comprising the polymer material. In particular, the invention relates to an intraocular lens (IOL) suitable for implantation in mammals, which IOL has visible light transmission properties comparable to those of the human crystalline lens. Provided is a transparent polymer material containing at least one covalently attached dye, said dye having the general formula I: 

Functionalized dyes and use thereof in ophthalmic lens material

The present invention discloses to a high refractive index polysiloxane (co)polymer comprising refractive index modifying groups chemically bonded in clustered configuration to the polysiloxane backbone. The invention also discloses methods for the preparation of such high refractive index polysiloxane (co)polymers. A polysiloxane according to the invention is very suitable for use as a material for the production of intra-ocular lenses.

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Harkstede, Netherlands

Hendrik Smit