近视是指一个人对近距离的物体比较容易看清而远处的物体看不清楚的现象，它的产生是由于光线的聚焦点落在了视网膜之前。

When you are short-sighted, your eyes focus well only on close objects, while more distant objects appear blurred. This is because light rays focus in front of the retina.

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近视是指一个人对近距离的物体比较容易看清而远处的物体看不清楚的现象，它的产生是由于光线的聚焦点落在了视网膜之前。

When you are short-sighted, your eyes focus well only on close objects, while more distant objects appear blurred. This is because light rays focus in front of the retina.

youdao