Predictive factors of success in selective laser trabeculoplasty (SLT) treatment

Figures & data

Table 1 Baseline characteristics of the subjects included in the study

Characteristic
Age (SD)	76.5 (11.8) years
Gender	75% women
IOP before SLT (mm Hg) (SD)	24.7 (4.6)
Number of SLT procedures undergone:
SLT 1 (%)	74 (62)
SLT 2 (%)	38 (32)
SLT 3 (%)	5 (4)
SLT 4 (%)	3 (2)
Average number of spots per eye (SD)	26.9 (4.8)
Average dose per eye (mJ) (SD)	0.88 (0.11)
Average anterior chamber (0–4) (SD)	3.8 (0.49)
Average pigmentation (0–3) (SD)	0.77 (0.66)
Diagnosis:
Exfoliative glaucoma (%)	73 (61)
Primary open angle glaucoma (%)	34 (28)
Ocular hypertension (%)	9 (7.5)

Abbreviations: SD, standard deviation; SLT, selective laser trabeculoplasty.

Table 2 Multivariate regression analysis: time to failure dependent variable

Variables	Test value (T)	Probability (P)
Age	2.48	0.015 (*)
Gender	0.57	0.571
SLT number	0.59	0.557
Number of spots	1	0.318
Laser energy	2.01	0.047 (*)
Grade of angle (0–IV)	0.06	0.95
Pigmentation (0–III)	0.41	0.686
IOP before SLT	3.75	<0.001 (*)
Diagnose	0.56	0.57
Number of medications	0.7	0.866

Note: Significant correlations are marked (*).

Abbreviations: SLT, selective laser trabeculoplasty; IOP, intraocular pressure.