It is important for everyone to keep good eyesight But do you know how to protect your eyesight? First don't keep your eyes working for a long time You'd better have a rest by looking in the long distance after you have studied an hour or so Second 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 third 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 being short-sighted。