Process of manufacturing contact lenses with measured exposure to oxygen
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United States of America Patent
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Aug 26, 2003
Issued Date -
N/A
app pub date -
May 12, 2000
filing date -
Dec 28, 1998
priority date (Note) -
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Abstract
This invention provides a method of manufacturing a contact lens comprising the step of: dosing a contact lens mold comprising optical mold surfaces with an oxygen-sensitive reaction mixture, wherein said optical surfaces of said contact lens mold have between from 0.13.times.10.sup.-9 to 2.6.times.10.sup.-9 moles/cm.sup.2 O.sub.2 available to interfere with the reaction of said reaction mixture. This invention further provides a method of manufacturing a contact lens comprising the steps of: dosing a contact lens mold comprising optical mold surfaces with a reaction mixture, and sealing said reaction mixture and said optical mold surfaces away from a gaseous environment, wherein said optical surfaces of said contact lens mold were exposed to said gaseous environment comprising greater than 0.5 percent oxygen just prior to said sealing step.
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