Table 4 SD standard deviation, IOP intraocular pressure, SLT selective laser trabeculoplasty. Significance of within treatment change, **p < 0.001, *p < 0.01. p-values in the right hand column reflect comparisons for baseline and treated IOP between SLT1 (<12 months in between treatments) and SLT1 (≥12 months between treatments, and SLT2 (<12 months in between treatments) and SLT2 (≥12 months between treatments)
From: Repeatability of selective laser trabeculoplasty for open-angle glaucoma
Interval between SLT1 and SLT2 ≥ 12 months | Interval between SLT1 and SLT2 < 12 months | |||||||
|---|---|---|---|---|---|---|---|---|
SLT1 Mean (sd) | SLT2 Mean (sd) | p SLT1 vs SLT2 | SLT1 Mean (sd) | SLT2 Mean (sd) | p SLT1 vs SLT2 | p-value | ||
IOP | Baseline (n = 104,33) | 20.0 (5.3) | 18.8 (4.9) | 0.02 | 21.3 (4.8) | 21.1 (5.0) | 0.84 | 0.22 0.02 |
6–12 months (n = 102,92,28,27) | 15.3 (3.3) | 16.4 (4.8) | 0.03 | 20.0 (5.4) | 16.2 (5.1) | 0.004 | <0.001 0.82 | |
12–15 months (n = 97,80,13, 19) | 16.3 (4.0) | 16.9 (4.8) | 0.19 | 19.3 (1.2) | 16.1 (4.6) | 0.58 | 0.19 0.50 | |
IOP decrease | 6–12 months | 4.7 (4.6)** | 2.4 (4.3)** | <0.001 | 1.9 (5.0) | 4.8 (5.6)** | 0.11 | 0.007 0.02 |
IOP decrease | 12–15 months | 3.6 (4.7)** | 1.7 (4.1)** | 0.004 | 0.3 (2.5) | 4.2 (5.5)* | 0.73 | 0.24 0.03 |
IOP % reduction | 6–12 months | 20.5 (18.5)** | 12.4 (24.0)** | 0.02 | 7.6 (21.2) | 22.5 (23.7)** | 0.05 | 0.002 0.07 |
IOP % reduction | 12–15 months | 15.0 (23.5)** | 8.9 (20.9)** | 0.09 | 0.2 (12.8) | 19.4 (25.8)* | 0.66 | 0.28 0.06 |