作业帮英语翻译By definition a cataract is an opacity in the lens.For p
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/11/06 03:40:37
英语翻译
By definition a cataract is an opacity in the lens.For practical purposes,however,the term is only applied to those opacities of the lens that impair sight.
Classification and Etiology:Cataracts are classified according to the age of the individual,etiology,and the morphologic characteristics of the opacity.
The developing mechanism of cataract is unknown.Heredity is an important factor in many instances of congenital cataract,and development of traumatic cataract follows injury to the lens.Many forms of radiant energy such as infrared rays,X-rays,or radium emanation are known to cause cataract.However,little is known about the etiology in the large and important group of senile cataracts.
By definition a cataract is an opacity in the lens.For practical purposes,however,the term is only applied to those opacities of the lens that impair sight.
Classification and Etiology:Cataracts are classified according to the age of the individual,etiology,and the morphologic characteristics of the opacity.
The developing mechanism of cataract is unknown.Heredity is an important factor in many instances of congenital cataract,and development of traumatic cataract follows injury to the lens.Many forms of radiant energy such as infrared rays,X-rays,or radium emanation are known to cause cataract.However,little is known about the etiology in the large and important group of senile cataracts.
从定义的角度来说,白内障是晶状体混浊.而从实用的角度来说,白内障仅仅是指损害视力的混浊体.
分类和病因：白内障根据个人年龄、病理学以及混浊体的形体特点来分类.
白内障的成因目前尚不清楚.很多先天性白内障的重要成因是遗传,也有晶状体受伤后而形成的创伤性白内障.现在已经知道,远红外线、X光射线或者镭射气等辐射能可导致白内障.但是,人们对老年性白内障人数众多并且非常突出的病因却知之甚少.
分类和病因：白内障根据个人年龄、病理学以及混浊体的形体特点来分类.
白内障的成因目前尚不清楚.很多先天性白内障的重要成因是遗传,也有晶状体受伤后而形成的创伤性白内障.现在已经知道,远红外线、X光射线或者镭射气等辐射能可导致白内障.但是,人们对老年性白内障人数众多并且非常突出的病因却知之甚少.
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