Table 1.

 Tear lipocalin concentration, total protein concentration, and results of ocular surface examination (SD)

	Obstructive MGD	Seborrhoeic MGD	Normal controls
Schirmer test (mm)	5.4 (2.1)	6.4 (2.3)	8.5 (3.2)
Cotton thread test (mm)	10.4 (4.3)	12.7 (4.9)	13.7 (3.1)
Tear film BUT (s)	4.4 (1.7)	4.9 (2.1)	7.9 (1.9)
Fluorescein score	1.7 (1.5)	0.9 (1.1)	0
Rose bengal score	0.5 (0.7)	0.5 (0.6)	0.1 (0.3)
Tear lipocalin (mg/ml)	0.89 (0.19)*	1.05 (0.22)**	1.54 (0.23)
Total protein (mg/ml)	8.66 (1.50)	9.16 (1.76)	9.48 (1.72)

MCD, meibomian gland dysfunction.

The concentration of lipocalin in patients with obstructive MGD and seborrhoeic MGD was significantly lower than that of normal controls (*p = 0.00021 and **p = 0.00042, respectively).