Table 2.
P Values for statistical comparison of clinical parameters and morphological & functional measurements of MGs among groups
| Parameter | MGD vs. Symptomatic non-MGD | MGD vs. Normal Control | Symptomatic non-MGD vs. Normal Control |
|---|---|---|---|
| OSDI | <0.001 | <0.001 | <0.001 |
| NI-BUT (s) | <0.001 | <0.001 | 0.001 |
| Meibum expressibility (0-3) | <0.001 | <0.001 | >0.99 |
| MGYSS | <0.001 | <0.001 | >0.99 |
| CFS score | <0.001 | <0.001 | >0.99 |
| ST I (mm) | 0.04 | <0.001 | 0.49 |
| Morphological parameters | |||
| DI | <0.001 | 0.02 | 0.54 |
| TI | 0.001 | 0.01 | >0.99 |
| GA (%) | <0.001 | <0.001 | >0.99 |
| Functional parameter: SI range | 0.01 | <0.001 | 0.55 |
Abbreviations: MGs: meibomian glands; MGD: meibomian gland dysfunction; SD: standard deviation; OSDI: ocular surface disease index; NI-BUT: non-invasive tear film break-up; MGYSS: meibomian gland yield secretion score; CFS: corneal fluorescein staining score; ST I: Schirmer test I; DI: diameter deformation index; TI: tortuosity index; GA: gland area ratio; SI: signal index of the glands.