Table 4.

Median pre- and posttreatment visual examination scores, interquartile ranges, and significance levels at which the null hypothesis is rejected for the Wilcoxon Sign Rank test.

Treatment regime	Control	FV	CPP-ACP	CPP-ACP-FV
Pretreatment median (interquartile range)	2 (2-3)	3 (2-3)	2 (2-3)	3 (2-3)
Posttreatment median (interquartile range)	2 (2-3)	2 (2-3)	2 (1-2)	1 (1-2)
Sample size (n)	32	22	21	28
Significance level (p)	0.257	0.003	<0.001	<0.001