锥体细胞变性是黄斑部疾病,常为散发病例,但家族性病例亦非罕见。常常很早期即开始视力减退,因伴有畏光,患孩喜在暗处活动。辨色力障碍也可能为早期主诉。黄斑病损: (1)常染色体显性遗传型(Autosomal dominant form):视力消失出现在有明显眼底镜所见的黄斑病变以前。但是这样的早期病例应用荧光血管造影表现典型而明显的“牛眼型”(Bull’s Pyramidal cell degeneration is a macular disease, often sporadic cases, but familial cases are not uncommon. Early vision is often very early that due to photophobia, the child likes to act in the dark. Discrimination of color disorders may also be an early complaint. Macular degeneration: (1) Autosomal dominant form: visual acuity disappears before macular degeneration, which is seen with a distinct ophthalmoscope. However, such early cases of application of fluorescein angiography typical and obvious “bull’s eye” (Bull’s