Disinfection system of contact lens
AssigneeMenicon Co., Ltd.
InventorsOsamu Mori, Yukihiro Kojima
Life of this patent
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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.
Claims13
A contact lens disinfecting solution, comprising:
- hydrogen peroxide at a concentration of 1 to 10 wt %;
- and
- at least one of an organic carboxylic acid and a salt thereof which comprises a hydroxyl group and a carboxyl group that are bonded to one carbon atom,
- wherein the hydrogen peroxide in the contact lens disinfecting solution is stabilized such that an amount of hydrogen peroxide that would remain after heating the contact lens disinfecting solution at 40° C. for 3 months is 90% or more of the amount of hydrogen peroxide in the contact lens disinfecting solution before heating.
A contact lens disinfecting system, comprising:
- a metal catalyst;
- and
- a contact lens disinfecting solution, comprising:
- hydrogen peroxide at a concentration of 1 to 10 wt %;
- and
- at least one of an organic carboxylic acid and a salt thereof which (i) comprises a hydroxyl group and a carboxyl group that are bonded to one carbon atom, and (ii) is present in the contact lens disinfecting solution at a concentration of 0.1 to 5 wt %,
- wherein the hydrogen peroxide in the contact lens disinfecting solution is stabilized such that an amount of hydrogen peroxide that would remain after heating the contact lens disinfecting solution at 40° C. for 3 months is 90% or more of the amount of hydrogen peroxide in the contact lens disinfecting solution before heating.
Dependencies are inferred from the claim text.