it i important for everyone to keep good eyeight. but do you know how to protect your eyeight?
firt, dont keep your eye working for a long time. youd better have a ret by looking in the long ditance after you have tudied an hour or o.
econd, pay attention to the following: dont read in the un or in a poor light; dont read in bed or in a moving bu. and when you read you hould keep the book away from your eye for about a foot.
and third, do eye-eercie every day. it will alo help you keep good eyeight.
if you obey the rule above, i think, you may prevent your eyeight from becoming hort-ighted.