Table 6.

Effect size analysis of additional visual task exercises in physical education, KVA, and UDVA.

Indicators	Effect relationships	Effect	Bootstrap 95% CI		Proportion of effect
			LLCI	ULCI
UDVA (left eye)	Total effect	0.594	0.037	0.109
	Direct effect	0.514	0.027	0.100	87%
	Indirect effect	0.080	0.011	0.180	13%
UDVA (right eye)	Total effect	0.525	0.028	0.100
	Direct effect	0.438	0.017	0.090	83%
	Indirect effect	0.087	0.023	0.167	17%