Fig. 4

Ocular specific symptom scores. The horizontal line in the middle of each box indicates the median, while the top and bottom borders of the box mark the 75th and 25th percentiles, respectively. The whiskers above and below the box mark the minimum and maximum. “Pre” indicates preoperatively; and “post” indicates 6 months after the removal of the stent. Group 1, the pre-saccal obstruction group; Group 2, the post-saccal obstruction group. a Six ocular specific symptom scores for the preoperatively and 6 months after the removal of the stent. b The scores for Group 1. c. The scores for Group 2. Wilcoxon signed-rank tests were used to compare the pre- and the post-saccal groups. *P < 0.05; ** P < 0.01; *** P < 0.001; **** P < 0.0001