Kit for contact lens sterilization and method for contact lens sterilization
AssigneeHoya Corporation
InventorsYoko Itagaki, Masahiro Hiranuma
Life of this patent
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Abstract
Contact lenses can be sterilized effectively in a short time, by using a kit for contact lens sterilization which comprises an oxidizing agent for sterilizing contact lenses and a reducing agent for making nontoxic the oxidizing agent still remaining after sterilization and wherein the oxidizing agent and the reducing agent each have such a property and form that they do not substantially react with each other in the kit and that when they are placed in water substantially simultaneously, the major portion of the oxidizing agent dissolves in water more rapidly than the major portion of the reducing agent. Further, with this kit, the sterilized contact lenses can be made nontoxic without fail.
Claims16
A kit for contact lens cleaning, comprising a compound capable of releasing available chlorine as an oxidizing agent for removing stains adhering to contact lenses and a reducing agent for making nontoxic the oxidizing agent still remaining after stain removal, wherein the oxidizing agent and the reducing agent are each in such a form that the oxidizing agent and the reducing agent do not substantially react with each other in the kit and that when they are placed in water substantially simultaneously, the major portion of the oxidizing agent dissolves int he water more rapidly than the major portion of the reducing agent.
A method for contact lens cleaning using a compound capable of releasing available chlorine as an oxidizing agent for removing stains adhering to contact lenses and a reducing agent for making nontoxic the oxidizing agent still remaining after stain removal, the oxidizing agent and the reducing agent being each in such a form that when they are placed in water substantially simultaneously, the major portion of the oxidizing agent dissolves in the water more rapidly than the major portion of the reducing a gent, the method comprising:
- (1) placing the oxidizing agent and the reducing agent in water substantially simultaneously to dissolve the major portion of the oxidizing agent;
- (2) immediately conducing a cleaning treatment of the lens by oxidizing the agent and a treatment of the residual oxidizing agent by the reducing agent for making the residual oxidizing agent nontoxic, macroscopically in this order.
Dependencies are inferred from the claim text.