Does the blue light actually influence your health？Blue light before bedtime can make it harder to sleep，And screens on phones,computers and television give out a lot of blue light.This is all true.But if you think blue light as main problem influencing your sleep or your eye health,Its time to think in another way.

　　A researcher says that blue light is part of sunlight and your eyes are under the sunshine all the time .You are fine. There are studies in mice that have found blue light can be bad for the eyes, but mice are nocturnal creatures whose eyes are different from ours.In a sence our eyes can protect themselves.

　　However, adding more protection isnt likely to help.You can buy blue _blocking glasses to stop the blue light ,but the research points out that way will waste your money. You could get the same effect just by holding your phone far from your face.

　　If you are worried about your eye health or your ability to get to sleep on time, you already know what to do: put the screens away at bedtime. Read a book or find something else to do. While you are using screens, take a twenty second break every 20 minutes.

　　藍光真的能影響你的健康嗎？睡覺之前的藍光能讓你更加難以入眠,手機，電腦和電視都能發出大量的藍光。但是如果你認為藍光是影響你睡眠和眼睛健康的主要問題的話，那就該換個角度思考了。

　　一位研究人員說藍光是太陽光的部分，你的眼睛一直出處于太陽光下，但是你眼睛完好無損。對小白鼠的實驗發現藍光對眼睛有害，但老鼠是夜行動物，他們的眼睛不同于我們的眼睛，從某種意義來說，我們的眼睛能自我保護。

　　然而，加上更多的保護可能也有幫助，你可以買藍光過濾眼鏡來遮擋藍光，但研究人員指出，這種方法隻會浪費你的錢，要把手機離你的臉遠一點，與戴藍光過濾眼鏡的效果一樣。

　　如果你擔心有你的眼睛健康和準時睡眠時間，你已經知道做些什麼了：就前十遠離屏幕。讀一本書或找點其他事情做。你要使用屏幕時，每20分鐘休息20秒。

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