Table 2 Summary of conducted examinations and number of eyes

Day 0, 3, 7

Schirmer test

Rose Bengal staining

Fluorescein staining

Conjunctival impression cytology (CIC)

6 eyes from control group

and 8 eyes each from three PI groups

After day 7

Histological analysis

Immunofluorescence staining

4 eyes from control group

and 4 eyes each from three PI groups