MINICK, KASEY JON,CARNEY, FIONA PATRICIA,SENTELL, KAREN BELINDA,MINNO, GEORGE EDWARD
申请号：
CA2692831
公开号：
CA2692831C
申请日:
2008.08.27
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
An ophthalmic product, comprising a sealed and sterilized package whichinclude a packaging solution and a soft hydrogel contact lens immersed in thepackagingsolution, wherein the packaging solution includes: a homopolymer or copolymerofvinylpyrrolidone, wherein the homopolymer or copolymer of vinylpyrrolidone ispresent inan amount sufficient to provide the packaging solution a viscosity of up toabout5.0 centipoises at 25°C； glycerin or a polyethylene glycol having anaverage molecularweight of about 600 or less； an .alpha.-oxo-multi-acid or salt thereof in anamount sufficient tohave a reduced susceptibility to oxidation degradation of the polyethyleneglycol in thepackaging solution； and one or more buffering agents in an amount sufficientto providethe solution a pH of from about 6.0 to 8.0, wherein the packaging solution hasanosmolality of from about 200 to about 450 mOsm/kg. The application furtherprovides aprocess for making a soft contact lens.
