在人体的一生中唯有晶状体是持续生长的组织。新 生的晶状体纤维不断产生,老的纤维渐渐地被推向核 部,晶状体失去可塑性而逐步硬化。随着年龄的增长,晶 状体的厚度也增加。由于晶状体的体积增大,弹性减低 及硬度增加,代谢活动减少,其透明度也降低,从而导致 老视。晶状体的体积增大也是闭角型青光眼发生的诱因 之一。 晶状体出现混浊称为白内障。类型很多,有先天性、 In the lifetime of the human body, only the lens is a continuously growing tissue. The newborn lens fibers are constantly produced, the old fiber is gradually pushed to the nucleus, the lens loss of plasticity and gradually hardening. With age, the thickness of the lens also increases. Due to the increased volume of the lens, decreased elasticity and increased hardness, reduced metabolic activity, its transparency is also reduced, resulting in presbyopia. The increase in the volume of the lens is also one of the triggers of angle-closure glaucoma. The opacity of the lens is called cataracts. Many types, congenital,