Table 3.

Correlation between DED subscale and NEI-VFQ-25 subscale.

	Overall	General	General	Ocular	Near	Distance	Social	Mental	Role	Dependency	Driving	Color	Peripheral
		health	vision	pain	activities	activities	functioning	health	difficulties			vision	vision
Schirmer's I test (mm)	−0.01	−0.06*	0.06*	−0.03	0.01	0.03	0.02	−0.02	0.02	0.06*	−0.02	0.01	−0.00
TBUT (s)	0.06*	0.06*	0.07*	−0.03	0.02	0.04	0.03	−0.01	0.05	0.01	0.10*	0.01	0.03
OSDI score	−0.47**	−0.15**	−0.40**	0.10**	−0.09**	−0.26**	−0.24**	−0.09**	−0.22**	−0.48**	−0.55**	−0.12**	−0.21**

DED, Dry eye disease; TBUT, Tear film break up time; OSDI, ocular surface disease index; NEI-VFQ-25, National Eye Institute Visual Functioning Questionnaire-25.

^*P < 0.05;

^**P < 0.01.