Fig. 3From: In vivo confocal microscopy assessment of meibomian glands microstructure in patients with Graves’ orbitopathyIn vivo confocal microscopy images of meibomian gland orifice. The polygon tool was used to trace and measure meibomian gland orifice area (MOA). The orifice (highligted by a circle) was round, and the interior was uniform, presented low reflection in controls (A). However, the orifice was irregular in shape, with obvious blockage of high-reflective materials (arrow) in active Graves’ orbitopathy (B), and partial fibrosis (arrow) around the orifice in inactive Graves’ orbitopathy (C)Back to article page