PMC

Tear break-up time (TBUT) after treatment. Compared with the pretreatment level, the mean TBUT time increased after treatment.
Note: *P < 0.0001 according to the Wilcoxon test.

Fluorescein and Rose Bengal score after treatment. Compared with the pretreatment level, the fluorescein and Rose Bengal score decreased after treatment.
Note: *P < 0.0001 according to the Wilcoxon test.

Ocular surface disease index (OSDI) after treatment. Compared with the pretreatment level, the OSDI decreased, and the subjective symptoms improved after treatment.
Note: *P < 0.0001 according to the Wilcoxon test.

Schirmer and phenol red thread test results after treatment. Compared with the pretreatment levels, tear volumes measured using the Schirmer test (without analgesia) and the phenol-red thread test significantly increased at 1 week after treatment and slightly decreased thereafter.
Note: *P < 0.0001 according to the Wilcoxon test.