乳頭周囲浮腫をきたした多発一過性白点症候群の1例

A case of multiple evanescent white dot syndrome with peripapillary edema

　27歳女性が前日からの左眼光視症で受診した。矯正視力は右1.5，左1.0であった。左眼の乳頭周囲に浮腫があり，その周囲に白点が若干個あった。蛍光眼底造影で乳頭周囲の脈絡膜に循環遅延があった。原田病を疑い，副腎皮質ステロイドのパルス療法を行った。その翌日に乳頭周囲の浮腫と白点が消失し，多発一過性白点症候群（MEWDS）と診断した。本症での盲点拡大の原因が脈絡膜循環障害である可能性がある。

　A 27-year-old woman presented with photopsia in her left eye since the day before. Her corrected visual acuity was 1.5 right and 1.0 left. Her left eye showed peripapillary edema surrounded by a few white dots. Fluorescein angiography showed filling delay in the peripapillary choroid. She was treated by pulsed corticosteroid under the tentative diagnosis of Harada disease. Peripapillary edema and white dots disappeared on day 2 of treatment,leading to the diagnosis of multiple evanescent white dot syndrome（MEWDS）. There is a possibility that enlarged blind spot in this syndrome is caused by disturbed chorodial circulation.