Ophthalmic solution and contact lens solution
AssigneeMenicon Co., Ltd.
InventorsKentaro Hozumi, Osamu Mori, Akira Tsuzuki
Life of this patent
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Abstract
An ophthalmic solution or contact lens solution comprising at least one germicidal/preservative component. The ophthalmic solution further comprises at least one selected amino-acid-based component, 0-0.2 wt. % of sodium chloride, and 0-0.5 wt. % of phosphate. The contact lens solution further comprises at least one selected acidic component and 0-0.2 wt. % of sodium chloride. Alternatively, the contact lens solution further comprises at least one selected amino-acid-based component, at least one selected acidic compound, and 0-0.2 wt. % of sodium chloride.
Claims21
An ophthalmic solution which comprises at least one germicidal/preservative component selected from the group consisting of biguanides and quaternary ammonium salts, further comprising;
- at least one amino-acid-based component selected from the group consisting of amino acids each having an isoelectric point of not smaller than 4 and a molecular weight of not smaller than 89, salts of said amino acids, and derivatives of said amino acids;
- at least one acidic component selected from the group consisting of glycolic acid, lactic acid, gluconic acid, aspartic acid, glutamic acid, and pyrophosphoric acid;
- sodium chloride, the concentration of which in said ophthalmic solution is adjusted to be held in a range of 0-0.2 wt. %;
- and
- phosphate, a concentration of which in said ophthalmic solution is adjusted to be held in a range of 0-0.5 wt. %.
A solution for a contact lens which comprises at least one germicidal/preservative component selected from the group consisting of biguanides and quaternary ammonium salts, further comprising;
- at least one amino-acid-based component selected from the group consisting of amino acids each having an isoelectric point of not smaller than 4 and a molecular weight of not smaller than 89, salts of said amino acids, and derivatives of said amino acids;
- at least one acidic component selected from the group consisting of glycolic acid, citric acid, lactic acid, gluconic acid, aspartic acid, glutamic acid, phosphoric acid, and pyrophosphoric acid;
- and
- sodium chloride, the concentration of which in said ophthalmic solution is adjusted to be held in a range of 0-0.2 wt. %.
Dependencies are inferred from the claim text.