移動性網膜下液を伴った後部強膜炎の1例

A case of posterior scleritis associated with shifting subretinal fluid

　72歳女性が2か月前からの右眼の視力低下と眼痛で受診した。矯正視力は右0.03，左1.5で，眼圧は右8mmHg，左12mmHgであった。右眼の下方に胞状網膜剝離があり，体位変換で網膜下液が顕著に移動した。Bモード超音波検査で右眼球後壁が肥厚し，眼窩造影を併用したCT検査で強膜の肥厚と造影効果があり，後部強膜炎と診断された。プレドニゾロン60mg/日の経口投与で3か月後に網膜剝離が消退し，視力が0.2に回復した。移動性網膜下液を伴う網膜剝離では，後部強膜炎の可能性があることを示す症例である。

　A 72-year-old woman presented with reduced vision and pain in her right eye since 2months before. Her visual acuity was 20/600 right and 20/15 left. The intraocular pressure was 8mmHg right and 12mmHg left. Her right eye had bullous retinal detachment in the lower periphery. The retinal detachment shifted its position by changing the head position. B-scan ultrasonography and computerized tomography（CT）showed thickening of posterior sclera,suggesting posterior scleritis. Peroral prednisolone at the daily dosis of 60mg was followed by disappearance of retinal detachment 3months later. The visual acuity improved to 20/100. This case illustrates that posterior scleritis may cause retinal detachment with shifting subretinal fluid.