Patterned laser trabeculoplastyと選択的レーザー線維柱帯形成術の比較

Comparison of patterned and selective laser trabeculoplasty for open-angle glaucoma

要約　目的：PASCAL^®のパターンシステムを利用したレーザー線維柱帯形成術（PLT）と選択的レーザー線維柱帯形成術（SLT）の眼圧下降効果について後ろ向きに比較検討した。対象と方法：開放隅角緑内障21例24眼のうち，12眼にPLT，12眼にSLTを施行し，レーザー前後の眼圧を6か月以上経過観察した。結果：PLT群，SLT群ともに6か月で有意な眼圧下降が得られた。眼圧下降率は，6か月の時点でPLT群およびSLT群ともに統計学的な有意差はなかった。結論：PLTは，6か月の経過観察期間においてSLTと同等の眼圧下降効果を示した。

Abstract.　Purpose：To report and compare the outcome of patterned laser trabeculoplasty（PLT）and selective laser trabeculoplasty（SLT）for open-angle glaucoma. Cases and Method：This study was made on 24 eyes of 21 patients. The age ranged from 18 to 88 years, average 64 years. The series comprised primary open-angle glaucoma 16 eyes, steroid glaucoma 4 eyes, exfoliation glaucoma 3 eyes, and pigmentary glaucoma 2 eyes. PLT was performed in 12 and SLT in 12 eyes. The two groups were similar regarding age, sex or type of glaucoma. Intraocular pressure（IOP）averaged 21.8±5.0 mmHg in PLT group and 23.8±6.7 mmHg in SLT group. Results：Six months after treatment, IOP averaged 14.3±3.3 mmHg in PLT group and 17.3±3.4 mmHg in SLT group. Rate of reduction in IOP averaged 33％ in PLT group and 22％ in SLT group. There was no significant difference in IOP decrease between the two groups. Conclusion：PLT showed IOP-reducing effect similar to SLT during 6 months of observation.