Myopia, also known as nearsightedness, is a prevalent condition in China.

近视在中国是一种普遍的眼部。

Is it: A, color blindness, B, nutritional imbalance, C, nearsightedness, or D, stress?

是A, 色盲, B, 营养不平衡, C, 近视, 还是D, 面临压力?

Because a new study finds that nearsightedness is linked to the number of years spent in school.

因为一项研究发现近视眼和在学校上学的时间有关。

People with myopia, or nearsightedness, have trouble focusing on objects far away, often because the eye is too long—kind of football-shaped.

近视的人聚焦远方物体有困难，常因为眼球太长，有点像美式足球。

It helps the eyes produce dopamine, which lowers the risk of developing nearsightedness (also known as short-sightedness).

它有助于眼睛产生多巴胺， 降低患近视（也称为近视）的风险。

So nearsightedness can be corrected by diverging lenses, spreading out the light rays so a focused image is formed at the proper distance.

因此，近视可以过发散镜片来矫正 ，分散光， 在适当的距离形成聚焦图像。

When we put all these pieces together, this ultimate explanation for nearsightedness -- that environmental and behavioral change impact the way we use our eyes -- helps us better understand the proximate cause.

当我们将所有这些部分放在一起时，这种对近视的最终解释——环境和行为的改变会影响我们使用眼睛的方式——有助于我们更好地理解近因。

For her sake he came out of his shell and went about seeing and testing all sorts of people with those observing eyes of his, which saw so much in spite of their nearsightedness.

为了她，他破壳出，用他那双敏锐的眼睛观察和测试各种各样的人，尽管他们近视，但他的眼睛却看到了很多。