| http://www.w3.org/ns/prov#value | - This invention provides a method for preparing a lens having UV-absorbing properties, comprising charging to a mold a monomer mixture comprising lens-forming monomers and an essentially non-UV-absorbing compound; exposing the monomer mixture in the mold to a light source including ultraviolet light to cure the monomer mixture and form the lens, whereby the non-UV-absorbing compound converts to a U
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