UV absorbing ocular lens
AssigneeSeed Co., Ltd.
InventorsTakao Sato, Yoshiko Yamazaki, Johan Sebastian Basuki, Timothy Charles Hughes, James Matthew MacDonald, Kimmo Petteri Kemppinen
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Abstract
Ocular lenses having UV absorbing properties are disclosed. The ocular lens comprises a hydrogel polymer comprising polymerised residues derived from a polymerisable UV absorber of formula (I): U-L-Py (I) wherein: U is a UV absorbing moiety; L is a hydrophilic non-polyalkylene glycol linker comprising an anionic, a zwitterionic or a saccharide moiety; and Py is an ethylenically unsaturated polymerisable moiety.
Claims18
An ocular lens comprising a hydrogel polymer comprising polymerised residues derived from a polymerisable UV absorber of formula (I):
- U-L-Py (I)
- wherein:
- U is a UV absorbing moiety;
- L is a hydrophilic non-polyalkylene glycol linker comprising an anionic, a zwitterionic or a saccharide moiety;
- and
- Py is an ethylenically unsaturated polymerisable moiety.
Dependencies are inferred from the claim text.