| http://www.w3.org/ns/prov#value | - While this invention has been disclosed primarily with respect to contact lenses and their manufacture, it should be understood that it is not limited thereto but can be used to produce similar multifocal lenses for other uses such as in cameras, flashlights, search lights or other applications in which a lens having a circumferential area of one diopter surrounding a central area having a lower d
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