Table 3.

Ocular surface evaluation in normal controls and MGD group.

Parameters	Normal controls (n = 114)	MGD group (n = 830)	P-value
BCVA	0.9 ± 0.2	0.9 ± 0.2	0.451
IOP (mmHg)	14.0 ± 2.9	13.2 ± 2.5	0.078
OSDI	6.5 ± 4.8	26.0 ± 15.1	< 0.001*
TBUT (s)	7.3 ± 4.2	4.1 ± 2.3	0.002*
Schirmer I test (mm)	11.5 ± 9.4	10.1 ± 8.0	0.250
Lipid layer thickness (nm)	67.9 ± 21.9	51.7 ± 24.9	0.004*
Cornea staining	0.2 ± 0.6	0.7 ± 1.2	0.012*
MG loss (%)	11.5 ± 11.9	34.5 ± 12.2	0.002*
Rate of partial blinking	0.6 ± 0.3	0.6 ± 0.4	0.634
Lid margin abnormality score	1.2 ± 0.7	2.9 ± 0.8	0.002*
MG expressibility score	0.6 ± 0.1	1.7 ± 0.1	0.001*
Meibum score	0.5 ± 0.2	2.2 ± 0.2	0.010*

BCVA best-corrected visual acuity, IOP intraocular pressure, MGD meibomian gland dysfunction, TBUT tear film break-up time.

*P < 0.05 was considered statistically significant.