Selective Laser Trabeculoplasty Protects Glaucoma Progression in the Initial Primary Open-Angle Glaucoma and Angle-Closure Glaucoma after Laser Peripheral Iridotomy in the Long Term
Table 1
Clinical characteristics of the studied groups.
Characteristics
POAG
PACG
Age, years
68 ± 5.33
67 ± 7.37
0.367
Existence of glaucoma before SLT, years
2.34 ± 1.64
2.67 ± 1.43
0.321
Follow-up period after SLT, years
6.22 ± 1.54
6.75 ± 1.83
0.485
Corneal thickness, μm
548 ± 32.83
545 ± 36.25
0.245
Endothelial cell count (cells/mm2) prior to SLT
2451 ± 132
2531 ± 145
0.401
Endothelial cell count (cells/mm2) 1 month after SLT
2482 ± 143
2343 ± 163
0.041
Anterior-posterior axis, mm
23.02 ± 1.59
21.88 ± 0.69
0.001
Anterior chamber depth, mm
3.35 ± 0.37
2.46 ± 0.45
0.001
Lens thickness, mm
4.82 ± 0.34
4.75 ± 0.32
0.102
RNFL, μm
96.45 ± 12.04
97.56 ± 12.34
0.530
GCC, μm
89.37 ± 7.64
90.15 ± 9.26
0.564
No. оf OCT tests
9.90 ± 1.67
10.67 ± 1.76
0.425
No. of visual field tests
9.55 ± 2.71
10.65 ± 3.03
0.276
Initial IOP, mm Hg
21.43 ± 2.40
22.19 ± 4.22
0.282
Last IOP, mm Hg
18.80 ± 1.98
18.46 ± 3.30
0.628
Initial MD, dB
−2.0 ± 1.19
−1.87 ± 1.65
0.156
Initial PSD, dB
2.34 ± 2.25
2.35 ± 1.96
0.417
Degree of TM pigmentation
2.2 ± 0.65
2.44 ± 0.43
0.456
Dimensions of ACA upwards (°)
32.2 ± 5.18
12.89 ± 3.95
0.002
Dimensions of ACA downwards (°)
30.5 ± 5.0
24.356 ± 4.21
0.120
Hypotensive regimen before SLT (average amount of eye drops)
1.25 ± 0.57
1.19 ± 0.49
0.403
Last average amount of eye drops after SLT
0.67 ± 0.59
0.48 ± 0.58
0.171
Mean energy/applications used, mJ
0.89 ± 0.10
0.88 ± 0.19
0.642
Average number of spots per eye
56.4 ± 5.59
53.5 ± 5.59
0.110
Repeat SLT
37.5%
34.17%
0.401
Average time for receiving the repeated SLT
16.3 ± 3.29
14.3 ± 4.31
0.322
Values are mean ± SD, unless otherwise noted. ACA, anterior chamber angle; GCC, ganglion cell complex; IOP, intraocular pressure; MD, mean deviation; PACG, primary angle-closure glaucoma; POAG, primary open-angle glaucoma; PSD, pattern SD; RNFL, retinal nerve fiber layer; TM, trabecular meshwork; SLT, selective laser trabeculoplasty. indicates reliability of difference between the groups according to the Mann–Whitney U test. is calculated using the Wilcoxon signed-rank test.
