Contact lens cleaning solution and method for cleaning contact lenses using the same
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Nov 25, 1997
filing date -
Mar 29, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a contact lens cleaning solution which is capable of, simultaneously and in a simplified manner, rendering surfaces of the contact lens hydrophilic and cleaning the contact lens for removal of protein deposits, without suffering from reduction of the cleaning effect of a protease, and also provides a method of cleaning a contact lens which is capable of rendering the surfaces of the contact lens hydrophilic while, at the same time, cleaning the contact lens for removal of the protein deposits, by using the contact lens cleaning solution as described above. A desired contact lens cleaning solution is prepared, which contains a protease in an amount effective for removing protein adhering or clinging to the contact lens and gum arabic as a hydrophilicity rendering component, wherein divalent metal ions in the gum arabic are removed or inactivated. The contact lens is immersed in such a contact lens cleaning solution, so as to remove the protein adhering or clinging to the contact lens and render the surfaces of the contact lens hydrophilic.
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