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

在中国是一种遍的眼部疾病。

Maybe curly hair or nearsightedness runs in your family.

或许你家有卷发或的遗传倾向。

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

因为一项研究发现眼和在学校上学的时间有关。

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

是A, 色盲, B, 营养不平衡, C, , 还是D, 面临压力?

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

的人聚焦远方物体有困难，通常因为眼球太长，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， 从而降低患（也称为）的风险。

Optometrists are experts in diagnosing conditions such as nearsightedness, farsightedness and astigmatism, and prescribe corrective lenses on the basis of vision tests.

验光师擅长诊断、远和散光等状况，并根据力测试结果开具矫正镜片。

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，可以通过发散镜片来矫正 ，分散光线，从而 在适当的距离形成聚焦像。

" The condition of myopia or nearsightedness is caused by the fact that the eye is too long, " says Carolyn Lederman, an ophthalmologist based in Purchase, New York.

“的成因是眼球过长。”纽约帕切斯的眼专家卡罗琳·莱德曼说。

But it just seems like it's causing some long-term damage just for some nearsightedness to please Donald Trump and stay out of his glare right now.

但这似乎只是为了眼前取悦唐纳德·特朗并避开他的锋芒，而导致了某些长期的损害，显得有些目光短浅。

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

If we say something runs in the family, it can be due to genes or DNA. So, like Rex was saying, if nearsightedness runs in your family, that means that many of your family members may need glasses.

如果说某事在家族中流传，这可能是由于基因或DNA所致。 因此， 正如雷克斯所说，如果在你们家族中常见，这意味着许多家庭成员可能需要佩戴眼镜。