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Correlations among SMTube measurement and the DEDa parameters.
| Parameters | n | Mean ± SDb | Spearman's rho | P value |
|---|---|---|---|---|
| TMHc (mm) | 73 | 0.261 ± 0.103 | 0.632 | <0.001 |
| Schirmer I (mm) | 73 | 2.493 ± 1.959 | 0.617 | <0.001 |
| BUTd (s) | 73 | 3.126 ± 0.982 | 0.653 | <0.001 |
aDED: dry eye disease; bSD: standard deviation; cTMH: tear meniscus height; dBUT: tear breakup time.
