WETTABLE HYDROGEL CONTACT LENS AND METHOD FOR PRODUCING SAME

    公开(公告)号:EP2439579B1

    公开(公告)日:2018-11-07

    申请号:EP09845549.6

    申请日:2009-09-01

    Applicant: Seed Co., Ltd.

    CPC classification number: G02C7/049 C08L5/04 G02B1/043 C08L101/14

    Abstract: Disclosed is a hydrogel contact lens which has improved and long-lasting wettability in the surface and inner structures, while exhibiting excellent contamination resistance, shape stability and mechanical strength. Also disclosed is a method for producing the hydrogel contact lens. The wettable hydrogel contact lens is characterized by containing an ionic hydrophilic polymer which is a compound having a hydroxy group and an anionic group. The method for producing a hydrogel contact lens is characterized in that a constituent component of the hydrogel contact lens is a copolymer containing at least a cationic monomer and an anionic monomer, and in that the method comprises a step wherein counter ions of the monomers form ionic bonds and a step wherein an ionic hydrophilic polymer, which is a compound having a hydroxy group and an anionic group, is contained.

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