Table 2. Comparison of acinar unit density and diameter of meibomian glands in normal controls and MGD patients.

	Controls	MGDs	p value
Acinar unit density (/mm2)	101.3±33.8	47.6±26.6	p=0.0001
Acinar unit diameter (μm)	41.6±11.9	98.2±53.3	p=0.0001

Note that the mean acinar unit density was significantly lower in patients with MGD when compared with the control subjects. The mean acinar unit diameter was significantly longer in MGD patients than in normal controls. Data are given as mean±SD. p-values denote the statistical comparison between controls and MGDs. MG=meibomian gland, MGD=meibomian gland dysfunction.