Method for polymerizing contact lenses
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United States of America Patent
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Mar 19, 2002
Grant Date -
Aug 16, 2001
app pub date -
May 15, 1998
filing date -
May 15, 1998
priority date (Note) -
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Abstract
A method for photopolymerizing a monomer mixture to form a lens involves charging to a mold a monomer mixture including lens-forming monomers, and exposing the monomer mixture in the mold to a light source including light in the visible region of the spectrum. The method is useful for monomer mixtures that include a UV-absorbing compound and/or a tinting agent. Preferably, the monomer mixtures include a polymerization initiator including a phosphine oxide moiety.
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