Table 1. Baseline Characteristics of Eligible Clinical Trials.
| Author (year) | Location | Design | No.eye | Age (MD±SD) | Sex (M/F) | Type of glaucoma | Durations (mon) | Baseline IOP |
|---|---|---|---|---|---|---|---|---|
| Wilson(2003) | Sri Lanka | RCT | 1:59 2:64 | 1:52.02(18.85) 2:51.92(16.39) | 1:18/41 2:21/43 | OAG;CAG | Mean 31 | 1:53.69(28.51) 2:57.13(25.02) |
| Im(2004) | Korean | Non-RCT | 1:34 2:24 | 1:63.76(13.28) 2:61.47(12.41) | 1:20/14 2:17/7 | NVG | 2–12 | 1:36.9(12.9) 2:39.3(12.7) |
| Pakravan(2007) | Iran | RCT | 1:15 2:15 | 1:10.90(5.1) 2:9.10 (4.1) | 1:12/3 2:6/7 | Aphakic glaucoma | 1:13.1(9.7) 2:14.8(11) | 1:31(7.5) 2:31(10.7) |
| Lee (2008) | Korean | Non-RCT | 1:27 2:41 | 1:56.2(12.3) 2:58.2(13.9) | 1:25/2 2:32/9 | Pseudophakic glaucomatous | 6–12 | 1:34.9(8.3) 2:33.1(10.7) |
| Tran (2009) | USA | Non-RCT | 1:94 2:94 | 1:69.9 (14.0) 2:69.6 (12.3) | 1:42/36 2:40/48 | OAG; Pigmentary glaucoma; Pseudoexfoliative glaucoma | Mean 30 | 1:23.8(8.5) 2:22.0 (7.2) |
| Shen (2011) | USA | Non-RCT | 1:20 2:20 | 1:54. 0 (15.6) 2:59.65(15.8) | 1:9/11 2:10/10 | OAG; NVG | 1:25.0(19.74) 2:31.05(24.45) | 1:47.7(10.2) 2:47.8(11.3) |
RCT: prospective randomized controlled trial; Retro: retrospective comparative controlled trial; NA: not available; AGV: Ahmed glaucoma valve implantation group; Trab: trabeculectomy group; IOP: intraocular pressure; OAG: open angle glaucoma; CAG: closed angle glaucoma; NVG: neovascular. AGV /Trab: Ahmed glaucoma valve implantation group/ trabeculectomy group.