Table 1.

 Differences in iontophoresis group between baseline and follow up

	Before	1 week		1 month		3 months
	Mean (SD)	Mean (SD)	p Value	Mean (SD)	p Value	Mean (SD)	p Value
Subjective symptoms (face score)	5.2 (1.6)	3.0 (1.2)	<0.01	3.0 (1.3)	<0.01	3.5 (1.5)	<0.01
Frequency of artificial tear substitute application (times)	6.3 (4.5)	3.2 (2.2)	<0.01	3.9 (3.6)	<0.05	4.6 (3.6)	<0.05
Break up time (seconds)	3.5 (1.1)	5.2 (2.9)	<0.01	4.8 (3.2)	0.16	4.2 (1.7)	0.06
Schirmer I (mm)	3.5 (4.2)	3.8 (3.2)	0.50	4.1 (5.8)	0.40	4.1 (5.8)	0.40
Fluorescein staining (score)	1.2 (1.1)	0.8 (0.9)	<0.01	0.9 (1.1)	<0.05	0.9 (0.9)	<0.05
Rose bengal staining (score)	5.8 (3.0)	4.7 (2.7)	<0.05	4.6 (2.8)	<0.05	4.7 (2.8)	<0.05
Impression cytology (score)	9.9 (4.0)	11.8 (3.9)	0.09	11.8 (3.4)	0.06	10.9 (5.3)	0.22