System for improving hydrophilicity of contact lens and application of the same to packaging of contact lens
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United States of America Patent
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Oct 11, 2016
Grant Date -
Apr 17, 2014
app pub date -
Dec 20, 2013
filing date -
Sep 2, 2011
priority date (Note) -
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Abstract
Providing a system which can exhibit a desired effect of improving hydrophilicity of a contact lens without causing adverse influences on sense of use of the contact lens and a cleaning effect, and which can effectively prevent adhesion of lipid stain. Also providing a packaging solution for the contact lens which can effectively suppress or prevent reduction of its viscosity with time even when the packaging solution is sterilized by heating. The contact lens is immersed in an aqueous solution which contains a low-molecular weight hyaluronic acid having a molecular weight of not higher than 80,000, or a salt or derivative thereof, and which has a pH of 6.0-8.0 and an osmotic pressure of 220-380 mOsm.
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