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Physicochemical properties of eye drops with various concentrations of choline salicylate without polymers increased viscosity.
| Parameter | Eye drops (mean ± SD, n = 3) |
||
|---|---|---|---|
| 1% CS | 2% CS | 3% CS | |
| pH (mean ± SD) | 7.4 ± 0.01 | 7.6 ± 0.02 | 7.5 ± 0.02 |
| Tonicity (mOsm/L) (mean ± SD) | 289 ± 0.5 | 295 ± 0.6 | 305 ± 0.6 |
