儿童型早老症[即Hutchinso-Gilford综合症(HGS)],系指在儿童期体内各种代谢均已达到人类衰老的表现,迄今文献报告共30余例。目前对本病之诊断多依据临床表现,缺乏有力佐证。脑阻抗血流图(以下简称脑血流图),是一种非创伤性的反映颅脑血液循环状态的检查方法,对脑动脉硬化的诊 Children with presbyopia [Hutchinso-Gilford syndrome (HGS)], refers to all kinds of metabolism in childhood have reached the performance of human aging, so far reported in the literature a total of more than 30 cases. At present the diagnosis of the disease based mostly on clinical manifestations, the lack of strong evidence. Brain impedance blood flow diagram (hereinafter referred to as cerebral blood flow diagram), is a non-invasive test of cerebral blood circulation to reflect the status of the diagnosis of cerebral arteriosclerosis