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The mean values of tear film tests between indoor and outdoor employees
| Mean±SD
|
||
|---|---|---|
| Indoor employees | Outdoor employees | |
| Tear osmolarity, mOsmol/L | 309.25±11.8 | 308.35±10.6 |
| FTBUT, s | 8.58±4.8 | 5.54±1.3 |
| PRT, mm | 21.25±7.2 | 24.72±6.6 |
Abbreviations: FTBUT, fluorescein tear breakup time; PRT, phenol red thread.
