Preservative-free contact lens treating solution comprising hyaluronic acid and erythritol
AssigneeBausch + Lomb Ireland Limited
InventorsVicki Barniak, Catherine Scheuer, William T. Reindel, John Michael Duex, Andrea E. Siverling
Life of this patent
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Abstract
A preservative-free contact lens treating solution includes (a) about 0.005 to about 2 wt. %, based on the total weight of the preservative-free contact lens treating solution, of hyaluronic acid or a salt thereof; (b) about 0.01 to about 1 wt. %, based on the total weight of the preservative-free contact lens treating solution, of erythritol; (c) one or more nonionic surfactants; (d) sodium chloride, potassium chloride or any combination thereof; and (e) one or more buffers.
Claims19
A preservative-free contact lens treating solution, comprising consisting of:
- (a) about 0.005 to about 2 wt. %, based on the total weight of the preservative-free contact lens treating solution, of hyaluronic acid or a salt thereof;
- (b) about 0.01 to about 1 wt. %, based on the total weight of the preservative-free contact lens treating solution, of erythritol;
- (c) one or more nonionic surfactants;
- (d) one or more of sodium chloride and potassium chloride;
- (e) one or more buffers selected from the group consisting of boric acid, a salt of boric acid and combinations thereof;
- (f) one or more lubricants;
- and
- (g) water.
A method of rewetting a contact lens, the method consisting of:
- administering a preservative-free contact lens treating solution to a contact lens while worn on the eye, wherein the preservative-free contact lens treating solution consists of (a) about 0.005 to about 2 wt. %, based on the total weight of the preservative-free contact lens treating solution, of hyaluronic acid or a salt thereof;
- (b) about 0.01 to about 1 wt. %, based on the total weight of the preservative-free contact lens treating solution, of erythritol;
- (c) one or more nonionic surfactants;
- (d) one or more of sodium chloride and potassium chloride;
- (e) one or more buffers;
- (f) one or more lubricants;
- and (g) water.
A system useful as an artificial tear or for rewetting or lubricating contact lenses while in the eye, the system including at least a drop dispenser capable of holding between about 1 and about 30 ml of a preservative-free contact lens treating solution that consists of (a) about 0.005 to about 2 wt. %, based on the total weight of the preservative-free contact lens treating solution, of hyaluronic acid or a salt thereof;
- (b) about 0.01 to about 1 wt. %, based on the total weight of the preservative-free contact lens treating solution, of erythritol;
- (c) one or more nonionic surfactants;
- (d) one or more of sodium chloride and potassium chloride;
- (e) one or more buffers;
- (f) one or more lubricants;
- and (g) water.
Dependencies are inferred from the claim text.