患者男,53岁。因右眼渐进性视力下降1年多,视物不清个月就诊。患者于1年多前发现右眼视物遮挡,视力逐渐下降未重视。1个月前视力明显下降,视物不清,到当地医院就诊(诊断不详),未作系统检查和治疗。既往身体健康,自幼右额部、颊部及右眼睑有青灰色斑,随年龄增长而缓慢扩大;自幼 Male patient, 53 years old. Progressive visual acuity decreased by more than a year due to blurred vision months treatment. Patients in more than a year ago found that the right eye occlusion, visual acuity did not pay attention. 1 month ago, visual acuity decreased significantly, depending on the material is not clear to the local hospital (diagnosis is unknown), not for systematic examination and treatment. Past physical health, since childhood, right forehead, cheek and right eyelid with blue-gray spots, with age and slowly expanding; since childhood