Conjunctival staining score
The baseline conjunctival staining score was not significantly different between the two groups (p = 0.487). Conjunctival staining scores improved at 12 weeks from baseline in both groups (AS, from 3.28 ± 1.853 to 1.44 ± 1.39; p = 0.000 vs. PRP, from 2.93 ± 2.054 to 1.5 ± 1.478; p = 0.000) (Table 