Why is the light in your eyes nearly gone?

为什么你眼中的光亮逐渐黯淡消失？

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Dim the lighting – it is unpleasant to lie with a bright light shining in your eyes.

把灯光调暗–在刺眼的灯光下躺着不舒服。

《柯林斯英汉双解大词典》

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.

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。

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