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要約 目的:心因性視覚障害と診断されていた急性帯状潜在性外層網膜症(AZOOR)の症例の報告。症例:15歳女性が左眼の視野障害で紹介受診した。3か月前から左眼に光視症があり,心因性視覚障害と診断されていた。所見:矯正視力は左右とも1.2で,前眼部,中間透光体,眼底に異常がなく,左眼に求心性視野狭窄があった。多局所網膜電図で視野に一致した振幅の低下があり,AZOORと診断した。初診から6か月後の現在まで視野の改善はない。結論:AZOORでは求心性視野障害が生じることがあり,心因性視野障害と誤認されることがある。鑑別には網膜電図,特に多局所網膜電図が有用である。
Abstract. Purpose:To report a case of acute zonal occult outer retinopathy(AZOOR)who was initially diagnosed as psychogenic visual disturbance. Case:A 15-year-old female was referred to us for visual field defect in the left eye. She had had photopsia 3 months before and been diagnosed with psychogenic visual disturbance. Findings:Corrected visual acuity was 1.2 in either eye. No abnormal finding was present in the anterior segment,ocular media,or the fundus. The left eye showed constriction of visual field. Multifocal electroretinogram showed diminished amplitude corresponding to the site of impaired visual field. This finding led to the diagnosis of AZOOR. There has been no change in visual field for 6 months until present. Conclusion:Concentric constriction of visual field may be present in AZOOR simulating psychogenic visual field disturbance. Multifocal electroretinogram may be useful in the differential diagnosis.
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