As we all know that the eyes are very important for us and it is essential for us too。So It is important for everyone to keep good eyesight。 But do you know how to protect your eyesight?

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First， don\'t keep your eyes work for a long time。 You\'d better have a rest by looking in the long distance after you have studied an hour or so。

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Secondly， pay attention to the following: Don\'t read in the sun or in a poor light; don\'t read in bed or in a moving bus。 And when you read you should keep the book away from your eyes for about a foot。

And thirdly， do eye-exercises every day。 It will also help you keep good eyesight。

If you obey the rules above， I think， you may prevent your eyesight from becoming short-sighted。