Disinfection system of contact lens

Abstract

A disinfection system of a contact lens comprising immersing the contact lens in a disinfecting solution containing hydrogen peroxide in a concentration of 1 to 10% and neutralizing the hydrogen peroxide in the disinfecting solution through contact with a metal catalyst, where the disinfecting solution contains an organic carboxylic acid or a salt of the organic carboxylic acid, the organic carboxylic acid having a structure in which a hydroxyl group and a carboxyl group are bonded to one carbon atom; the disinfecting solution is adjusted to have a pH of 6 to 8; and the disinfecting solution after the neutralization is adjusted to have an osmotic pressure of 250 to 350 mOsm.

What is claimed is: 
     
         1 . A disinfection system of a contact lens including immersing the contact lens in a disinfecting solution containing hydrogen peroxide in a concentration of 1 to 10% and neutralizing the hydrogen peroxide in the disinfecting solution through contact with a metal catalyst,
 the disinfection system comprising the steps of:   adding one of an organic carboxylic acid and a salt thereof into the disinfecting solution, the organic carboxylic acid having a structure in which a hydroxyl group and a carboxyl group are bonded to one carbon atom;   adjusting a pH of the disinfecting solution to 6 to 8; and   adjusting an osmotic pressure of the disinfecting solution after the neutralization to 250 to 350 mOsm.   
     
     
         2 . The disinfection system of a contact lens according to  claim 1 , wherein the pH of the disinfecting solution is adjusted by adding one of an acid and an alkaline agent into an aqueous hydrogen peroxide solution, together with the organic carboxylic acid or the salt thereof. 
     
     
         3 . The disinfection system of a contact lens according to  claim 1 , wherein the organic carboxylic acid is glycolic acid. 
     
     
         4 . The disinfection system of a contact lens according to  claim 1 , wherein the organic carboxylic acid is tartaric acid. 
     
     
         5 . The disinfection system of a contact lens according to  claim 1 , wherein the organic carboxylic acid is citric acid. 
     
     
         6 . The disinfection system of a contact lens according to  claim 1 , wherein the organic carboxylic acid or the salt thereof is contained at a concentration of at least 0.1% or more. 
     
     
         7 . The disinfection system of a contact lens according to  claim 1 , wherein the disinfecting solution further contains a chelating agent. 
     
     
         8 . The disinfection system of a contact lens according to  claim 7 , wherein the chelating agent is at least one selected from the group consisting of EDTA, a salt thereof, etidronic acid, and a salt thereof. 
     
     
         9 . The disinfection system of a contact lens according to  claim 1 , wherein the metal catalyst is a metal film catalyst. 
     
     
         10 . The disinfection system of a contact lens according to  claim 1 , wherein the disinfecting solution further contains at least one of surfactant and a nonionic tonicity agent. 
     
     
         11 . The disinfection system of a contact lens according to  claim 1 , wherein the metal catalyst is contained in a predetermined treatment container for contact lens disinfection, and the disinfecting solution is contained in the treatment container to allow the metal catalyst be in contact with the disinfecting solution.