From about the age of 45 or so initially, the lens gradually hardening, decreased flexibility, ciliary body function has been weakened, and onset of presbyopia.

大约从45岁左右初步，晶状体逐渐硬化、弹性下降，睫状体的功用也在减弱，然后出现老花眼。

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Senile cataract is the most common form, is the lens caused by aging and hardening muddy, often occur in the elderly, the so-called old "-" yellow.

老年性白内障为最常见的一种，乃水晶体老化而变硬混浊所致，常发生于老年人，所谓人老“珠”黄。

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Senile cataract is the most common form, is the lens caused by aging and hardening muddy, often occur in the elderly, the so-called old "-" yellow.

老年性白内障为最常见的一种，乃水晶体老化而变硬混浊所致，常发生于老年人，所谓人老“珠”黄。

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