Cleaning and disinfecting solution for contact lens and method of cleaning and disinfecting contact lens using the solution
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United States of America Patent
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Jul 28, 1998
Grant Date -
N/A
app pub date -
Oct 3, 1996
filing date -
Feb 21, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
It is an object of the present invention to provide a cleaning and disinfecting solution for a contact lens to be cleaned and disinfected simultaneously in a simplified manner with high efficiency. It is also an object of the present invention to provide a method of cleaning and disinfecting the contact lens wherein the cleaning and disinfection of the contact lens can be effected simultaneously in a short period of time by using the above-indicated cleaning and disinfecting solution. The above objects may be obtained according to one aspect of the present invention which provided a cleaning and disinfecting solution for a contact lens comprising an effective amount of proteolytic enzyme, 60-80% w/v % of propylene glycol, 10-35% w/v % of glycerine, and water, a total content of propylene glycol and glycerine being in the range of 70% to 95 w/v %. The latter object may be obtained according to another aspect of the invention which provides a method of simultaneously cleaning and disinfecting a contact lens by contacting the contact lens with the above-indicated contact lens cleaning and disinfecting solution for a short period of time of less than five minutes.
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