Table 2.
The postoperative characteristics and IOP control in the three groups
| Clinical Parameter | G1 Trabeculectomy (n=45) Median (IQR) | G2 Trabeculectomy with MMC (n=36) Median (IQR) | G3 Combined surgery (n=34) Median (IQR) | P |
|---|---|---|---|---|
| IOP at 3 months | 12 (10,16) | 12 (11,14) | 12 (10,14) | 0.90* |
| IOP at 6 months | 12 (10,16) | 12 (10,14) | 11 (10.5,15) | 0.84* |
| IOP at 12 months | 12 (10,14) | 11 (10,14) | 12 (11,16) | 0.93* |
| IOP at 18 months | 12.5 (10,18) | 11 (10,12.5) | 12 (10.5,14) | 0.30* |
| IOP at 24 months | 12 (11,16) | 11 (10,12) | 12 (10,16) | 0.21* |
| IOP at 30 months | 11 (10,12) | 12 (10,12) | 12 (12,20.5) | 0.03* |
| IOP at 48 months | 11.7 (2.1) | 12.4 (2.2) | 16 (5.8) | 0.10# |
| IOP at 60 months | 12.9 (3.3) | 10.8 (1.9) | 16.2 (9.9) | 0.37# |
| IOP at last follow up | 11 (10,16) | 12 (10,13.5) | 12 (10,14) | 0.62* |
| AGM at last follow up | 0 (0,0) | 0 (0,1) | 0 (0,1) | 0.31* |
| CDR at last follow up | 0.9 (0.8,0.9) | 0.9 (0.9,0.9) | 0.9 (0.9,1) | 0.15* |
| BCVA at last follow up in LogMAR | 0.2 (0.1,0.6) | 0.2 (0,0.5) | 0.2 (0.1,2.1) | 0.39* |
| Number of eyes blind at last follow-up | 17 (VA: 7, VF10) | 12 (VA: 3, VF: 9) | 17 (VA: 9, VF: 8) | 0.33* |
*Kruskal-Wallis test, #ANOVA F-test. The difference was significant at 30 months. Pairwise Wilcoxon Rank Sum Tests with Bonferroni correction showed the difference between G1 and G3 to be statistically significant (P=0.038). G1-G2 (P=1.0), G2-G3 (P=0.38). IOP: Intraocular pressure; FU: Follow-up, CDR: Cup to disc ratio; AGM: Anti-glaucoma medications; LogMAR: Logarithm of minimal angle of resolution, BCVA: Best-corrected visual acuity, VKC: Vernal keratoconjunctivitis; LFU: Last follow-up; MMC: Mitomycin C, AGV: Ahmed glaucoma valve; IOL: Intraocular lens, ECCE: Extracapsular cataract extraction; VA: Visual acuity, VF: Visual field