| Characteristics of patients | Trabeculectomy | DSCI | Latanoprost | p Value |
| No of patients | 20 | 20 | 20 | NS |
| POAG/NPG | 20/0 | 18/2 | 19/1 | NS |
| Men/women | 13/7 | 7/13 | 8/12 | <0.05 |
| White/black | 20/0 | 20/0 | 20/0 | |
| Mean age, years (SD) | 67.1 (9.24) | 72.5 (11.9) | 71.2 (10.4) | NS |
| Baseline IOP, mm Hg | 10.1 | 13.9 | 15.5 | <0.05 |
| Mean SD | ±3.4 | ±2.8 | ±2.0 | NS |
DSCI, deep sclerectomy with collagen implant; IOP, intraocular pressure; POAG, primary open-angle glaucoma; NPG, normal tension glaucoma.
Applied tests were chi-square or ANOVA when adequate.