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(P−1-92) 1998年までの5年間に,視野異常のある内因性視神経疾患83例を遡及的に検索した。内訳は,脱髄性疾患43例(52%),循環障害性20例(24%),薬物中毒14例(17%),遺伝性2例(2%),原因不明4例(5%)であった。特発性視神経炎が最も多かった。エタンブトールを内服中の結核患者29例中11例(38%)に視野障害があり,中毒性視神経症と診断した。特発性視神経炎では,両眼性が片眼性よりも視力転帰が不良であった。
We reviewed 83 cases of endogenous optic neuropathy with visual field defect seen during the 5 years through 1998. The series comprised demyalinating disease 43 cases (52%), vascular disease 20 cases (24%) , toxic disease 14 cases (17%) , hereditary disease 2 cases (2%) and unidentified 4 cases (5%) . Idiopathic optic neuritis was the most frequent entity. Out of 29 cases under systemic ethambutol, 11 cases (38%), showed visual field defect and were diagnosed as toxic neuropathy. The final visual outcome was poorer in bilateral idiopathic optic neuritis than in unilateral one.
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