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要約 目的:真性小眼球症児に行った光干渉断層計による所見の報告。症例:母親が視力不良を疑い,6歳女児が受診した。所見:矯正視力は右0.08,左0.09で,左右眼とも+18.25Dの遠視があった。角膜径は左右とも10.0mmで,眼軸長は右15.35mm,左15.33mmであった。両眼の眼底に偽乳頭浮腫と黄斑反射の消失があった。光干渉断層計による平均網膜厚は右380μm,左386μmで,平均黄斑部厚は右376μm,左369μmであった。眼鏡を装用させ,2年後に左右眼とも0.6の矯正視力が得られた。結論:本症例では,光干渉断層計により網膜厚と黄斑部網膜厚の増加,および浅い中心窩陥凹があり,成人の真性小眼球症と同様であった。
Abstract. Purpose:To report findings by optical coherence tomography for nanophthalmos in a child. Case:A 6-year-old girl presented with suspected visual impairment. Findings:Corrected visual acuity was 0.08 right and 0.09 left. Both eyes had refraction of +18.25 diopters. Corneal diameter was 10.0 mm in either eye. Axial length was 15.35 mm right and 15.33 mm left. Both eyes showed pseudopapilledema. Macular reflex was absent. Retinal thickness averaged 380μm right and 386μm left. Foveal thickness averaged 376μm right and 369μm left. After wearing spectacles for 2 years,corrected visual acuity improved to 0.6 in either eye. Conclusion:Increases in retinal and foveal thickness and absence of foveal depression were similar to those of nanophthalmos in adults.
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