Table 2.

Tear film break-up time in the treatment and placebo groups at baseline, 2 weeks, and 4 weeks after treatment.

	Follow-up periods			P value
	Baseline	2 weeks	4 weeks	P1	P2	P3
Treatment group (N = 25)	7.12 ± 1.20	7.80 ± 1.12	8.79 ± 1.73	0.88	0.01	0.07
Placebo group (N = 25)	7.28 ± 1.46	7.36 ± 1.41	7.50 ± 1.47	0.96	0.91	0.94
P value	0.86	0.26	0.02

P1 baseline versus 2 weeks; P2 baseline versus4 weeks; and P3 2 weeks versus 4 weeks.