異なる眼底所見を呈した眼底白点症の3症例

Three cases of fundus albipunctatus with variable fundus findings

　眼底白点症は，眼底に無数の白点をみる停止性の夜盲である。夜盲を訴え，眼底に多数の白点を認めた19歳女性（症例1），37歳男性（症例2），54歳男性（症例3）について，黄斑部所見を中心に臨床像の差異について検討した。3症例の暗順応は遅延していたが，2〜3時間後の閾値は症例1と2は正常，症例3はほぼ正常近くまで回復した。黄斑部は，症例2ではパターンジストロフィ様の色素上皮の異常所見が，症例3では標的黄斑病巣がみられた。網膜電図でflickerの振幅は年齢が高いほど減弱していた。これらの3症例は，本症の加齢に伴う進行の可能性を示唆した。

We observed three cases of fundus albipunctatus associated with cone dystrophy and other macular lesions. The cases were a female aged 19 years and two males aged 37 years and 54 years each. All the three cases had night blindness and numerous white spots in the fundus with additional varying clinical features. Dark adaptation was prolonged in all. After 2 hours, the visual threshold was normal in one case and slightly elevated in the other two. One case showed macular abnormality resembling pattern dystrophy of retinal pigment epithelium. Another showed bull's eye maculopathy. Amplitude of flicker electroretino-gram was decreased more in older than in younger cases. There clinical features suggest age-related progression of fundus punctatus.