OCT parameters Clinical factors Duration of DM HbA1c FBS r-value p-value r-value p-value r-value p-value TMH (μm) -0.269 0.003 0.017 0.849 -0.212 0.018 TMD (μm) -0.329 0.000 -0.008 0.934 -0.103 0.256 TMA (mm2) -0.331 0.000 -0.052 0.568 -0.204 0.023 TMH: Tear Meniscus Height, TMD: Tear Meniscus Depth, TMA: Tear Meniscus Area, TBUT: Tear-film Break-Up Time, R: Pearson’s Correlation Coefficient, P: Significance of Correlation.

Table 4: Correlation between tear meniscus optical coherence tomographic (OCT) parameters and clinical factors in diabetes mellitus (DM) patients.