Analysis of the Outcomes of the Screen-Time Reduction in Computer Vision Syndrome: A Cohort Comparative Study [Response to Letter]

Figures & data

Table 1 Correlation Between Differences in Daily Screen-Hours and Study Parameters

Parameters	r (Correlation Coefficient)	P value
UDVA	−0.61	<0.0001*
CDVA	−0.25	0.08
Ring 1	0.53	0.0001
Ring 2	0.51	0.0002
Ring 3	0.26	0.06
Ring 4	0.04	0.80
Ring 5	0.15	0.38
Quadrant 1	0.38	0.006
Quadrant 2	−0.12	0.39
Quadrant 3	0.19	0.19
Quadrant 4	−0.05	0.74

Notes: bold value* signifies negative correlation; bold values signify positive correlation.

Table 2 Correlation between Differences in UDVA and mfERG Parameters

Parameters	r (Correlation Coefficient)	P value
Ring 1	−0.70	<0.0001
Ring 2	−0.49	0.0003
Ring 3	−0.40	0.004
Ring 4	−0.10	0.48
Ring 5	0.01	0.94
Quadrant 1	−0.53	0.0001
Quadrant 2	0.08	0.57
Quadrant 3	−0.37	0.009
Quadrant 4	0.11	0.43

Note: The bold values signify negative correlation.

Table 3 Correlation Between Differences in CDVA and mfERG Parameters

Parameters	r (Correlation Coefficient)	P value
Ring 1	−0.34	0.02
Ring 2	−0.38	0.007
Ring 3	−0.23	0.11
Ring 4	−0.06	0.69
Ring 5	−0.13	0.37
Quadrant 1	−0.35	0.01
Quadrant 2	0.11	0.46
Quadrant 3	−0.25	0.09
Quadrant 4	0.05	0.72

Note: The bold values signify negative correlation.