Appeal No. 1997-2087
Application No. 08/203,837
Claims 15 and 25 are representative of the claims on appeal:
15. A method for disinfecting a contact lens comprising:
contacting a contact lens with a liquid medium initially containing an effective
contact lens disinfecting amount of hydrogen peroxide in the presence of a composition
comprising a cellulose decomposing enzyme component, a cleaning enzyme component
and a hydrogen peroxide destroying component, said composition being structured so that
said cellulose decomposing enzyme component is released in said liquid medium before
said hydrogen peroxide destroying component is released in said liquid medium and said
cleaning enzyme component is released in said liquid medium after said contact lens is
disinfected, said cellulose decomposing enzyme component being present in an amount
effective to render acanthamoeba cysts present in said liquid medium more susceptible to
be killed by hydrogen peroxide in said liquid medium than by hydrogen peroxide in a
substantially identical liquid medium in the absence of said cellulose decomposing
enzyme component, said liquid enzyme component is present in an amount effective to
remove the protein deposits on said contact lens prior to said contacting and the protein
deposits formed on said contact lens during said contacting from said cellulose
decomposing enzyme component from said contact lens, and said hydrogen peroxide
destroying component is present in an amount effective to destroy all the hydrogen
peroxide contained in said liquid medium, said contacting being effective to disinfect said
contact lens, to form protein deposits from said cellulose decomposing enzyme on said
contact lens and to remove protein deposits present on said contact lens prior to said
contacting and protein deposits formed on said contact lens during said contacting from
said cellulose decomposing enzyme component from said contact lens.
25. A composition comprising a cellulose decomposing enzyme component, a
hydrogen peroxide destroying component, an amount of a cleaning enzyme component
effective to remove the protein deposits from a contact lens present in a liquid medium in
which said cleaning enzyme component is released, the protein deposits including the
protein deposits present on said contact lens prior to said contact lens being present in the
liquid medium and the protein deposits formed on said contact lens from said cellulose
decomposing enzyme component, and a delayed release component, said composition
being a solid and structured so that said cellulose decomposing enzyme component is
released in said liquid medium before said hydrogen peroxide destroying component is
released in said liquid medium and said cleaning enzyme component is released in said
liquid medium at substantially the same time said hydrogen peroxide destroying
component is released in said liquid medium, said cellulose decomposing enzyme
component being present in an amount effective to render acanthamoeba cysts present in
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