Table 1

Comparison of specifications and energy settings between pattern scanning laser trabeculoplasty and selective laser trabeculoplasty

	Pattern scanning laser trabeculoplasty	Selective lasertrabeculoplasty
Laser wavelength	Optically pumped semiconductor laser 577 nm	Q-switched, frequency-doubled, Nd:YAG laser 532 nm
Laser spot diameter	100 µm	400 µm
Laser energy per pulse	2.5 mJ – 3.5 mJ	0.6–1.2 mJ
Laser pulse length	5 ms	3 ns
Energy delivered per mm²	318–446 mJ	4.8–9.5 mJ
*Number of applications for 360° treatment	1248	100
Total energy delivered for 360° treatment	3120–4368 mJ	60–120 mJ

*The number of laser applications is fixed at 1248 for 360° of trabecular meshwork treatment with pattern scanning laser trabeculoplasty whereas the number of laser applications may vary for 360° of trabecular meshwork treatment with selective laser trabeculoplasty.