| 主权项 |
1. A scleral lens solution, comprising:
an aqueous mixture that includes sodium, potassium, calcium and magnesium cations and a pH in a range from about 6.5 to about 8.7, wherein:
the aqueous mixture is configured to fill a void between a scleral lens and a cornea for a wear period of several hours,free ion concentrations of the calcium and the magnesium cations in the aqueous mixture are within 1 percent of total concentrations of the calcium and the magnesium cations in the aqueous mixture, respectively, andthe aqueous mixture is free of artificial preservatives having biocidal activity. |
