Fig. 1From: Efficacy of a fixed combination of 0.09 % xanthan gum/0.1 % chondroitin sulfate preservative free vs polyethylene glycol/propylene glycol in subjects with dry eye disease: a multicenter randomized controlled trialSchirmer test before and after intervention in both groups. Schirmer test after intervention showed statistically significant difference compared to baseline in XG/CS (p = 0.002) and PEG/PG (p = 0.019) but not between themBack to article page