新生血管を伴う滲出性中心性網脈絡膜症に対するレーザー光凝固

Laser photocoagulation for idiopathic choroidal neovascularization

　過去2年間に波長575〜630nmの色素レーザーで，活動性の脈絡膜新生血管を伴う滲出性中心性網脈絡膜症10眼を治療した。女性5例，男性4例の9例で，年齢は16〜48歳，平均34歳であった。光凝固後の視力は，2段階以上の改善4眼，不変5眼，悪化1眼で，最終視力は8眼が0.8以上，2眼が0.3以下であった。新生血管が中心窩下にある1眼で新生血管が残存し，中心窩からの距離が200μm以内の1眼では再発した。新生血管が中心窩から300μm以上離れた部位にあり，活動性の強い本症では，光凝固により視機能悪化を予防できる可能性がある。

We treated 10 eyes with active idiopathic choroidal neovascularization by dye laser photocoagulation (575~630 nm) during the foregoing two years. The 9 cases comprised 5 females and 4 males. The ages ranged from 16 to 48 years, average 34 years. The neovascular membrane disappeared in 8 eyes after photocoagulation. The visual acuity improved by two lines or more in 4 eyes, remained unchanged in 5 and deteriorated in one. Eight eyes attained the final visual acuity of 0.8 or more. The visual acuity remained 0.3 or less in 2 eyes. Neovascular membrane persisted in 2 eyes. It was located subfoveally in 1 and juxtafoveally in 1. The findings show that dye laser photocoagulation may be effective for idiopathic choroidal neovascularization when the neovascular membrane is located at least 300 μm away from the fovea.