To have a good health, especially for your eyes, you should have a balanced diet. For instant, you had better eat vegetables and fruits whose colors are yellow or orange. The reason is that they contains lots of vitamins that are good for health. Secondly, you should keep a distance at least 35 cm when reading a book or sit correctly when working. Last but not least, you should take enough sleep. You’d better sleep at least 6 or 8 hours a day because it will boost your mind. Moreover, do not go to bed late or watch TV over night.