交感性眼炎発症後，進行を停止した増殖糖尿病網膜症の2例

Remission of proliferative diabetic retinopathy in two eyes after sympathetic ophthalmia

　増殖糖尿病網膜症の片眼に硝子体手術を行った後，交感性眼炎を発症し，その後被交感眼の網膜症の進行が停止した2症例を報告した。症例1では硝子体出血に黄斑外牽引性網膜剥離を合併しており，症例2では黄斑部牽引性網膜剥離を認めたために硝子体手術を行った。両症例とも最終硝子体手術5か月後に交感性眼炎を発症し，いずれも被交感眼は夕焼け状眼底に移行した。交感性眼炎発症時，被交感眼に症例1では網膜および乳頭上新生血管を，症例2では線維血管性増殖膜を認めたが，夕焼け状眼底移行後，いずれも退縮した。交感性眼炎発症後の脈絡膜および網膜色素上皮の代謝変化が，糖尿病網膜症の進行に何らかの抑制効果を及ぼしている可能性が示唆された。

We observed two cases of diabetic retinopathy which developed sympathetic ophthalmia 5 months after vitreous surgery. Extramacular traction retinal detachment with vitreous hemorrhage was initially present in one case and macular traction detachment in the other. Both cases received surgery in one eye only. The fellow eye had retinal and disc neovascularization in one case and fibrovascular proliferation in the other. The findings in the fellow eyes started to spontaneously subside after diffuse fundus depigmentation, or sunset glow appearance set in after sympathetic ophthalmia. The cases illustrate that proliferative diabetic retinopathy may undergo spontaneous remission after sympathetic ophthalmia probably due to changes in the choroid and the vitreous.