白内障是常见的眼病,是主要的致盲原因之一.目前,尚无严格的白内障分类标准,而任何分类标准也不可能具有绝对意义.临床上,在先天性与后天性白内障的总括下,根据其形态学(部位、范围及混浊形态),病因学(包括晶体混浊发生的原因及时间),并充分考虑已知疾病的过程及毒性环境因素的关系进行分类,具有一定的实际意义.1先天性白内障 Cataract is a common eye disease, is one of the main causes of blindness.At present, there is no strict standard for classification of cataracts, and any classification criteria can not have absolute significance.Clinically, in the sum of congenital and acquired cataract, It has some practical significance to classify according to its morphology (location, range and turbid morphology), etiology (including the cause and timing of crystal opacity), and taking into account the relationship between known disease processes and toxic environmental factors.1 Congenital cataract