Table 2. Clinical signs and symptoms before and after hyperthermic and mechanical squeezing treatments in MGD patients with mild to moderate dropout of the meibomian gland (Group 1).

	Before treatment	After treatment	p-value
Meibography score	3.24 (±0.79)	2.76 (±1.02)	**0.005b
OSDI	47.55 (±23.05)	31.21 (±15.33)	***< 0.001a
TBUT (seconds)	5.87 (±1.75)	7.80 (±2.49)	***< 0.001b
Schirmer’s test (mm)	7.26 (±4.34)	7.31 (±3.58)	0.909b
Expressibility of meibum	22.28 (±11.10)	33.33 (±11.84)	***< 0.001a
Cornea staining score	1.34 (±0.54)	1.03 (±0.72)	*0.039b
Meibum quality score	2.12 (±0.42)	2.07 (±0.37)	0.435b

Data are presented as number and mean value ±standard deviation.

^a: Paired t-test results.

^b: Wilcoxon signed rank test results. OSDI: ocular surface disease index; TBUT: tear film break-up time.

* p<0.05,

** p<0.01,

*** p<0.001.