Visual Sequelae of Computer Vision Syndrome: A Cross-Sectional Case-Control Study

Table 8

Final multivariate linear regression analysis of factors affecting the total number of symptoms.

Variable	Regression coefficient (95% confidence interval)	value
Gender
Males	1
Females	0.6 (0.3 : 0.9)	<0.0001
Total daily screen-hours	0.2 (0.1 : 0.3)	<0.0001
Screen size
Large	1
Medium/small	0.3 (0.05 : 0.6)	0.02
Previous DED diagnosis	1.1 (0.:1.5)	<0.0001
Refractive errors/wearing	0.7 (0.4 : 1.0)	<0.0001
Poor lighting conditions	1.3 (1.0 : 1.7)	<0.0001
Upper screen edge at/above horizontal eye level	1.5 (1.2 : 1.8)	<0.0001
Close eye-screen distance	1.3 (1.00 : 1.6)	<0.0001
Uncomfortable seating postures	1.3 (0.8 : 1.7)	<0.0001
Texting with both thumbs	1.8 (1.4 : 2.1)	<0.0001
Screen-glare	1.4 (0.8 : 2.0)	<0.0001
Poor screen-resolution or design	1.4 (0.9 : 2.0)	<0.0001
Small font size	0.8 (0.4 : 1.1)	<0.0001