Comparison of 180° and 360° selective laser trabeculoplasty

1. Yong Ho Sohn
2. Tae Hoon Lim
3. Jong Jin Jang
4. Yoon Soo Jang
5. Hye Jin Park
6. Hyung Hoon Cho

Kim's Eye Hospital, Seoul, Korea

Purpose: To compare the effect and safety of two regimens of SLT with 50 laser spots on 180° of trabecular meshwork and SLT with 100 laser spots on 360° of trabecular meshwork in patients with POAG and OHT.

Methods: In a retrospective clinical study, the authors compared pressure-lowering effect of SLT in 2 groups of patients; group 1 (83 patients) received SLT on 180°, group 2 (30 patients) on 360° of trabecular meshwork. The clinical outcome indicators were the intraocular pressure of 1 day, 1 week, 1 month, 2 months, 3 months and 6 months after SLT, and the anterior chamber reaction at post-laser 1 day.

Result: There was no statistically significant difference in the pressure reduction between these two regimens after six months. Success rate of group 2 (43.3%) was higher than that of group 1 (31.3%) without statistical significancy (p=0.23). Anterior chamber reaction of two groups showed significant difference (group 1; 0.61±0.64 , group 2 ; 1.25±0.83 , p = 0.001)

Conclusion: SLT on 180° of trabecular meshwork has a similar effect compared to SLT on 360° of trabecular meshwork.