Reader Ms. Wang: During the summer vacation, my son played computer, TV and games until midnight every day, and his eyesight dropped drastically. School is about to start, what should I do? There are three conditions for the formation of myopia: close proximity, long hours, and continuous eye use. Nowadays, teenagers are busy with schoolwork and work, and TV and video games provide “favorable conditions” for the formation of myopia. Because of work and study, it is difficult to avoid using eyes at close range and for long periods of time, so putting myopia prevention in “avoiding continuous eye use” is a really effective way. That is, within one hour, there should be 15 minutes for the eyes to rest, such as looking into the distance, closing the eyes to rest, etc. Parents should supervise their children, even if they are at work, they should remind them to pay attention to eye hygiene by phone or after work. In terms of diet, pay attention to eye nutrition, eat less sweet food and more foods rich in vitamin A, such as eggs, milk, liver, carrots, spinach, fresh fruits, etc.