초록 ▼

A contact lens is disinfected in an aqueous H2O2 solution. The H2O2 solution is neutralized and transformed in situ into a buffered, saline storage solution by adding a neutralizer such as sodium sulfite or sodium thiosulfate, and optional buffering agents. The neutralizer has a coating which dissol

A contact lens is disinfected in an aqueous H2O2 solution. The H2O2 solution is neutralized and transformed in situ into a buffered, saline storage solution by adding a neutralizer such as sodium sulfite or sodium thiosulfate, and optional buffering agents. The neutralizer has a coating which dissolves to release the ingredients only a period of time after it is added, so that it can be put into the H2O2 solution at the same time that the lens is.

대표청구항 ▼

A process for disinfecting a contact lens, comprising (A) immersing the lens in a predetermined volume of an aqueous disinfecting solution consisting essentially of H2O2 at a concentration of about 3 wt. % or less which is effective to disinfect the lens in a disinfection period of less than about 6

A process for disinfecting a contact lens, comprising (A) immersing the lens in a predetermined volume of an aqueous disinfecting solution consisting essentially of H2O2 at a concentration of about 3 wt. % or less which is effective to disinfect the lens in a disinfection period of less than about 6 hours, and (B) decomposing the H2O2 in said disinfecting solution by adding to said solution, before said disinfection period has elapsed, a neutralizer in the form of a tablet or a plurality of particles and comprising one or more H2O2-neutralizing compounds which react with H2O2 to form H2O and reaction products which are non-injurious to the eye, in an amount of said one or more compounds effective to react with all the H2O2 in said solution, and thereby to form an aqueous solution containing said reaction products and having a pH of 6.5 to 8.5 and a tonicity of 200 to 450 milliosmol per kg of solution, and a coating encasing said tablet or each of said particles which coating dissolves gradually in said H2O2 solution, so as to release said one or more H2O2-neutralizing compounds only after said disinfection period has elapsed, whereby said released neutralizing compounds transform said H2O2 solution in situ into a buffered, saline lens storage solution.