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先天性白内障是生来就有的,根据发病原因又分为内生性与外生性两类。内生性:由内生因素引起,最多见的遗传方式是常染色体显性遗传和常染色体隐性遗传,也就是说,如果父母中有一个人患有白内障,子女中就有一半的可能性患有这种病;如果父母俩大都有异常基因,那么,子女患病的可能性为四分之三。外生性:是在胎儿发育过程中,母体被病毒感染,或一些药物的毒性作用,以及营养不良、患有慢性全身性疾病、
Congenital cataract is born there, according to the cause of illness is divided into two types of endogeneity and exogenous. Endogeneity: The most common hereditary pattern caused by endogenous factors is autosomal dominant and autosomal recessive inheritance. That is, if one of the parents has cataracts, half of the children have the possibility of having This disease; if most parents have abnormal genes, then children are three-fourths likely to get sick. Exogenous: In the process of fetal development, the mother is infected with the virus, or the toxic effects of some drugs, as well as malnutrition, suffering from chronic systemic diseases,