Method for polymerizing contact lenses having UV absorbing properties
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United States of America Patent
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Aug 31, 1999
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app pub date -
May 15, 1998
filing date -
May 15, 1998
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Abstract
A method for preparing a lens having UV-absorbing properties involves 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 UV-absorbing agent.
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