眼球外の原因による虚血性眼症の2症例

Two cases of ocular ischemic syndrome secondary to extraocular disorders

　眼球外の原因によって片眼性の虚血性網膜症，虹彩ルベオーシス，続発性緑内障をきたした2症例を経験した。

　第1例は67歳男性で，糖尿病性網膜症の経過観察中に左眼の虹彩ルベオーシスが突発した。後に内頸動脈閉塞が確認された。第2例は57歳男性で，眼窩尖端部症候群様の症状で初診し，経過中同様に虚血性眼症となり，脳内の悪性リンパ腫によるものと考えられた。

We observed two cases of monocular ischemic syndrome with retinopathy, iris rubeosis and secon-dary glaucoma. The first case, a 67-year-old male, was initially diagnosed as preproliferative diabetic retinopathy. Rapid progressive iris rubeosis was detected in his left eye 3 months later. Further examinations led to detection of ipsilateral com-mon carotid occlusion. The second case, a 57-year-old male, was referred to us due to signs of right orbital apex syndrome. We observed iris rubeosis, hypotension in the central retinal artery and retarded choroidal circulation in his right eye. Malignant lymphoma in the right orbit was identified as the cause of this syndrome.