Comparison of Meibomian Gland Loss and Expressed Meibum Grade Between the Upper and Lower Eyelids in Patients With Obstructive Meibomian Gland Dysfunction

Abstract

In patients with obstructive MGD, MGL and meibum grade in the lower eyelids were significantly greater than those of the upper eyelids. Although MGL and meibum quality showed a positive correlation with each other, TBUT and corneal staining score were significantly correlated with only meibum grade, and not with MGL.