Table 1. Characteristics of randomized controlled trials comparing SLT versus ALT.
| Author(year) | Group | Eye | Patients | Follow-up(m) | Age | Sex(M/F) | Type of Glaucoma* | Previous ALT | Baseline IOP | No of glaucoma medications: |
|---|---|---|---|---|---|---|---|---|---|---|
| Birt(2007) | SLT-A | 30 | 30 | 12 | 64.0 | 15/15 | 25/3/2 | 0 | 22.9 ±4.2 | 2.9 ± 1.2 |
| SLT-B | 27 | 27 | 12 | 72.4 | 14/13 | 22/4/1 | 27 | 21.5 ± 4.3 | 2.8 ± 1.2 | |
| ALT | 39 | 39 | 12 | 70.0 | 21/18 | 34/5/0 | 0 | 22.0 ±5.3 | 2.8 ± 1.2 | |
| Bovell(2011) | SLT | 89 | 152 | 60 | 69.7 | 36/53 | 54 /23/12 | 28/61 | 23.8 ± 4.9 | 2.6 ± 1.20 |
| ALT | 87 | 60 | 69.5 | 36/51 | 48/29/9 | 39/48 | 23.5 ± 4.2 | 2.4 ± 1.24 | ||
| Liu(2012) | SLT | 20 | 20 | 3.1 | 48.7 | 15/5 | 9/0/11 | 0 | 19.1±4.5 | 2.6 ± 0.9 |
| ALT | 22 | 22 | 3.2 | 51.6 | 14/8 | 10/0/12 | 0 | 21.9±4.4 | 2.9 ± 0.8 | |
| Rosenfeld(2012) | SLT | 22 | 22 | 12 | 71.95 | 11/11 | 9/7/6 | 0 | 25.4±1.8 | NA |
| ALT | 30 | 30 | 12 | 71.9 | 14/16 | 14/8/8 | 1 | 25.1±2.2 | NA | |
| Casa(2004) | SLT | 20 | 20 | 6 | 73.4 | 9/11 | 20/0/0 | 0 | 24.0±4.7 | 1.8±0.5 |
| ALT | 20 | 20 | 6 | 72.5 | 10/10 | 20/0/0 | 0 | 23.6±3.8 | 1.5±0.7 | |
| Kent(2013) | SLT | 45 | 60 | 6 | 72.9 | 16/29 | 0/45/0 | 0 | 23.1 ± 4.2 | NA |
| ALT | 31 | 6 | 73 | 10/21 | 0/31/0 | 0 | 25.2 ± 4.9 | NA |
* POAG/PXFG/Other type of OAG; Abbreviations: SLT = selective laser trabeculoplasty ; ALT =argon laser trabeculoplasty; IOP= intraocular pressure; M/F=male/female; m=month; NA: not available.