Table 2.

Correlations between all the studied parameters. p value were determined by Spearman Rho test

		OSDI	Hours of VDT use	Meibometry	Eyelid margin irregularity	Eyelid margin hyperemia	Plugging of the MG offices	Quality of the MG secretion	Nasal conjunctival hyperemia	Temporal conjunctival hyperemia
Hours of VDT use	r	0.235
	p	0.010*
Meibometry	r	− 0.074	0.034
	p	0.424	0.711
Eyelid margin irregularity	r	0.093	0.110	− 0.103
	p	0.311	0.234	0.263
Eyelid margin hyperemia	r	0.257	0.002	− 0.011	0.287
	p	0.005*	0.984	0.908	0.001*
Plugging of the MG offices	r	0.172	0.141	− 0.032	0.248	0.325
	p	0.060	0.123	0.731	0.006	< 0.001*
Quality of the MG secretion	r	0.085	0.104	− 0.170	0.141	0.217	0.372
	p	0.356	0.261	0.063	0.124	0.017*	< 0.001*
Nasal conjunctival hyperemia	r	0.098	− 0.046	0.056	0.181	− 0.080	0.314	0.186
	p	0.285	0.616	0.547	0.048*	0.383	< 0.001*	0.042*
Temporal conjunctival hyperemia	r	0.141	− 0.013	0.174	0.151	0.128	0.383	0.217	0.430
	p	0.125	0.891	0.058	0.099	0.163	< 0.001*	0.017*	< 0.001*
MGLA	r	− 0.002	− 0.023	− 0.152	0.079	0.099	0.058	0.187	0.058	0.092
	p	0.979	0.803	0.098	0.389	0.283	0.528	0.041*	0.528	0.315

^*Statistically significant (p < 0.05)

OSDI—ocular surface disease index, VDT—video display terminals, MG—meibomian glands, MGLA—meibomian gland loss area