未成熟儿视网膜病(Retinopathy ofprematurity简称Rop)是由于治疗中过量的给氧而导致的医原性疾病,因而经常引起医疗纠纷。但是Rop在未接受氧疗者也可见到,而既使应用高浓度氧疗时,也有多数并不发生。近年来很多学者对Rop的病因进行了探讨,认为与多种因素有关。一、未成熟未成熟儿视网膜的边缘部分存在毛细血管带,在出生后这部分血管才逐渐延伸,因而视网膜边缘部分呈缺血状态,是靠脉络膜循环的扩张而获得氧和营养。在高氧血症时,为了防止从脉络膜循环供氧增加,网膜中心动脉自动调节收缩,使血流减 Retinopathy of prematurity (Rop) is a medical disorder caused by an overdose of oxygen during treatment and therefore often leads to medical disputes. However, Rop was also seen in those who did not receive oxygen therapy, and most did not occur even with high oxygen therapy. In recent years, many scholars have explored the etiopathogenesis of Rop and concluded that it is related to many factors. First, the immature immature retinal part of the edge of the presence of capillaries, after the birth of this part of the blood vessels only gradually extended, so part of the retinal was ischemic state is by the expansion of the choroidal circulation and access to oxygen and nutrition. In hyperoxia, in order to prevent oxygen from the choroidal circulation increases, the central retinal artery automatically regulates contraction, so that blood flow minus