1、Presbyopia is a common eye condition that typically affects people over the age of 40.
老花眼是一种常见的眼睛状况，通常影响40岁以上的人。
2、As we age, the lens of the eye becomes less flexible, leading to presbyopia.
随着年龄的增长，眼睛的晶状体变得不太灵活，引起老花眼。