Table 2.

Characteristics of patients with dry eye in the survey

	At enrollment	One year later
Results of clinical tests (worse eye; n = 118)
Schirmer’s testing (mm)	3.7 ± 2.8	4.4 ± 3.5
Tear film break-up time (sec)	3.7 ± 1.7	3.8 ± 1.6
Fluorescein staining score (range 0–9)	1.9 ± 1.6	2.1 ± 1.7
Rose bengal staining score (range 0–9)	2.0 ± 2.0	2.0 ± 1.9

Notes: Results are expressed as the mean ± standard deviation. There were no statistically significant differences in results of clinical tests between enrollment and one year later (P > 0.05, Mann-Whitney test).