Hydrogel-forming polymers used in intraocular lenses
Hydrogel-forming polymers for contact lenses and intraocular lenses having increased toughness despite high equilibrium water content comprise a hydrophilic monomer (e.g. an N-vinyl lactam) and a polyunsaturated polymeric cross-linking agent. UV-absorbers are also disclosed which are bound in the po...
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Zusammenfassung: | Hydrogel-forming polymers for contact lenses and intraocular lenses having increased toughness despite high equilibrium water content comprise a hydrophilic monomer (e.g. an N-vinyl lactam) and a polyunsaturated polymeric cross-linking agent. UV-absorbers are also disclosed which are bound in the polymer structure so as to be inextractable, some undergoing photo-Fries re-arrangement on exposure to UV-radiation so as to become UV-absorbers in the re-arranged form. |
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