糖尿病網膜症における網膜耳側縫線領域の蛍光眼底所見

Fluorescein angiographic findings of temporal raphe area in diabetic retinopathy

要約　光凝固未施行の糖尿病網膜症28例54眼に蛍光眼底造影を行い，耳側縫線領域の所見と，眼底全体の所見との関連を検索した。単純網膜症10例，前増殖網膜症10例，増殖網膜症8例である。耳側縫線領域の無灌流野の有無，これ以外の部位での無灌流野の存在範囲，網膜中間周辺部の新生血管の有無の関連を検索の対象とした。耳側縫線領域に無灌流野がない20眼では，これ以外の部位に無灌流野があったのは1象限3眼のみであり，20眼すべてに新生血管はなかった。耳側縫線領域に無灌流野がある34眼では，そのすべてにこれ以外の部位に無灌野があり，2象限10眼，3象限4眼，4象限20眼であった。新生血管は34眼中12眼にあった。以上の所見から，耳側縫線領域の無灌流野の存在は糖尿病網膜症全体の重篤度を反映していると結論される。

Abstract.　Fluorescein angiography was performed in 54 eyes of 28 cases of diabetic retinopathy. Particular attention was paid to the temporal raphe area as related to overall fundus findings. The series comprised simple retinopathy 10 cases,preproliferative 10 cases and proliferative 8 cases. Capillary nonperfusion in the raphe area was absent in 20 eyes. In these 20 eyes,capillary nonperfusion elsewhere was present in 3 eyes involving one quadrant only. There was no eye with neovascularization. Out of 34 eyes with capillary nonperfusion in the raphe area,capillary nonperfusion elsewhere was present in 10 eyes involving two quadrants,4 eyes involving 3 quadrants,and 20 eyes involving 4 quadrants. Neovascularization was present in 12 of the 34 eyes. Above findings show that the presence of capillary nonperfusion in the temporal raphe area is positively related to the severity of diabetic retinopathy.