Reusable lens molds and methods of use thereof

    公开(公告)号:US09981436B2

    公开(公告)日:2018-05-29

    申请号:US14970827

    申请日:2015-12-16

    Applicant: Novartis AG

    Abstract: The present invention general related to a method and a reusable mold for making a contact lens, comprising a first mold half having a first mold surface in contact with a silicone containing lens forming composition and a second mold half having a second mold surface in contact with the lens forming composition. The first mold half and the second mold half are configured to receive each other such that a cavity is formed between the first mold surface and the second mold surface, wherein the cavity defines the shape of a contact lens to be molded. The lens forming composition is polymerizable and/or crosslinkable by a UV radiation, wherein at least one of the mold halves is made from an oxide glass material having a UV transmission cut-off wavelength no less than 390 nm and a specific gravity higher than 3.5.

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