| http://www.w3.org/ns/prov#value | - FIG. 1 is a cross section of a multifocal lens showing an example of the positive diopters that can be incorporated in a lens; l l FIG. 2 is a cross section of a .multifocal lens showing an example of the negative diopters that can be incorporated in a lens; i v FIG. 3 is a cross section view of a contact lens having a very large positive diopter in both the near and far vision areas; and vUnited
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