. 2016 May 18;9(5):682–686. doi: 10.18240/ijo.2016.05.07

Table 1. The comparison of positive rate in two groups with each follow-up point by RT-PCR.

Group	Time	Pre-treatment	1^st week	2^nd week	4^th week	6^th week	8^th week
Corneal epithelium scrapings	Positive samples	13/28	2/28	2/23	1/17	0/8	0/1
Corneal epithelium scrapings	¹P		0.001	0.003	0.004	0.032	1.000
Tears	Positive samples	4/30	2/30	1/28	0/27	0/26	0/26
	¹P		0.671	0.354	0.114	0.115	0.115
	P	0.006	1.000	0.583	0.386	—	—

¹P: Comparison of 1^st week, 2^nd week, 4^th week, 6^th week and 8^th week to the pre-treatment (Chi-squared test).