TABLE 2.
Upper lid MG morphological changes in Demodex-positive and Demodex-negative patients.
| Parameters | Demodex group (n = 64) | Control group (n = 51) | p value | p value* |
|---|---|---|---|---|
| Total variation | 927.3 ± 343.1 | 650.0 (569.5, 865.5) | 0.003 | 0.004 |
| (Range) | (315.0–1698.0) | (152.0–1725.0) | ||
| Average tortuosity of all MGs | 0.4 (0.3, 0.5) | 0.3 (0.3, 0.5) | 0.173 | 0.426 |
| (Range) | (0.14–0.91) | (0.12–0.83) | ||
| Average width of all MGs | 22.58 ± 4.58 | 22.7 (20.5, 25.5) | 0.206 | 0.557 |
| (Range) | (13.02–35.36) | (16.00–34.88) | ||
| Average gland number | 16.05 ± 3.86 | 16.31 ± 3.88 | 0.714 | 0.885 |
| (Range) | (6–48) | (9–27) | ||
| Average height of all MGs | 157.39 ± 42.43 | 227.83 ± 47.24 | <0.001 | <0.001 |
| (Range) | (78.53–251.76) | (86.89–309.64) | ||
| MG density | 0.22 ± 0.07 | 0.30 ± 0.09 | <0.001 | 0.008 |
| (Range) | (0.06–0.42) | (0.07–0.47) |
p-value of Mann–Whitney U test or independent-t test for continuous parameters and of χ2 test for categorical parameters; MG, meibomian gland; *p values adjusted for age by analysis of covariance