Effectiveness of Selective Laser Trabeculoplasty Applied to 360° vs. 180° of the Angle

Table 1

Comparison of the main outcomes of past studies comparing 180° and 360° of SLT.

Author, year	Shibata et al. 2012	Ozen et al. 2020	Goyal et al. 2010	Nagar et al. 2005
Type of study	RCS	RCT	RCT	RCT
180°
F/U (mths)	36	6	1	12
# of eyes	35	26	19	49
Mean preop. IOP (mmHg)	19.5	27.4	26	n/a
Mean reduction (mmHg)	2.6	9.1	6.1	n/a
% IOP reduction	13.3	33.2	23.6	n/a
Proportion with 20% IOP reduction	n/a	73.1	72.1	65
360°
F/U (mths)	36	6	1	12
# of eyes	34	26	18	44
Mean preop. IOP (mmHg)	21.0	27.7	25.5	n/a
Mean reduction (mmHg)	5.6	10.3	5.7	n/a
% IOP reduction	26.7	37.2	22.4	n/a
Proportion with 20% IOP reduction	n/a	76.9	89.5	82

F/U = maximum follow-up period; RCS = retrospective cohort study; RCT = randomized clinical trial; IOP = intraocular pressure; mmHg = millimeters of mercury.