Corneal fluorescein staining
DISEASE
The mean CFS score dropped significantly in all groups by the end of 4 weeks of treatment with cyclosporine, and continued to decline thereafter. Scores for the ITT and PP populations at baseline and on follow-up at 12 weeks is shown in Table 
Effect on Ocular Surface Disease Activity† Independent samples Student’s t test‡ Difference in mean change from baseline vs. control, with baseline value as covariate