Table 4

 Bleb morphology score of filtered eyes before and after phacoemulsification

Mean scoreSDp ValueTotal appearance of filtering bleb (max 12 points)
Insufficient ⩽6MediumFavourable ⩾10
*Statistical significant (Wilcoxon test).
Before phaco9.52.817%50%33%
1st–4th postop day8.73.00.0214*21%54%25%
6 months postop9.33.00.93524%40%36%
12 months postop8.93.40.15415%60%27%