假设你校举办看图征文活动，题目为“How to protect your eyesight”。请你用英语写一篇短文，指出图中所反映的现象，并从阅读时间，光线，眼保健操及睡眠等方面，谈谈保护眼睛的具体做法．
注意：
1．词数100-120字；
2．可适当加入细节，以便行文连贯。
3．参考词汇：近视-----near-sighted
How to protect our eyesight
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How to Protect Our Eyesight
Now in schools, more and more students got near-sighted. As is shown in the picture, more than 80% of the students in our class wear glasses. And it’s not difficult to find the causes to this phenomenon.
Long time of studying in the classroom with no time to refresh our eyesight is one of the causes. I think poor light is also the cause because our eyes easily get tired in the poor light. In addition, lack of sleep also contributes to this result.
As far as I am concerned, measures should be taken to protect our eyesight. Firstly, students should be given more time to do some exercise to refresh ourselves. Secondly, learning conditions need to be improved, especially the poor light in the class room. Thirdly, doing eye exercises regularly every day is a great necessity. Besides, enough sleep also contributes to the improvement.
