Table 4. Correlations between meibomian gland dysfunction and ocular surface parameters according to pterygium grades (1–4).
| Grade 1–2 | Grade 3–4 | |||
|---|---|---|---|---|
| Meiboscore superior | Meiboscore inferior | Meiboscore superior |
Meiboscore inferior | |
| K1 | 0.037 | 0.287 | 0.444 | 0.426 |
| K2 | 0.212 | 0.093 | 0.580* | 0.262 |
| CA | 0.309 | -0.226 | -0.198 | -0.402 |
| NITBUT | 0.151 | 0.050 | 0.085 | -0.425 |
| TMH | 0.213 | 0.226 | 0.090 | 0.213 |
| CH | -0.042 | 0.190 | 0.154 | 0.293 |
| Meiboscore superior | 0.277 | 0.483* | ||
| MGD/PTCOL superior | 0.578* | 0.069 | 0.580* | 0.424 |
| Meiboscore inferior | 0.277 | 0.483* | ||
| MGD/PTCOL inferior | 0.147 | 0.557* | 0.521* | 0.768* |
Correlations coefficient value by Spearman analysis of Meibomian Gland Dysfunction and Pterygium extension over the limbus (grades 1–4).
*P < 0.05. MG: Meibomian Gland; K: keratometry; CA: corneal Astigmatism; NITBUT: Non-Invasive Tear Breakup Time; TMH: Tear Meniscus Height; CH: Conjunctival Hyperemia; MGD/PTCOL: MG drop dropout area/pterygium colocalization