Children and adolescents need to distinguish between true myopia and pseudomyopia, and need to go to the hospital for dilated optometry to check. If the myopia is pseudomyopia, it is usually caused by overuse of the eyes, and it is necessary to pay attention to rest, relieve visual fatigue, and pseudomyopia will recover. Before the child enters the period of true myopia, it is recommended to maintain at least 2 hours of outdoor activities every day, and try to be in the sunshine, and after 20 minutes of close eye use, he/she should look into the distance for at least 20 seconds to relieve visual fatigue. For true myopia, there is no treatment, only try to slow down the speed of myopia, in addition to maintaining good eye habits, you can consider corneal reshaping lenses, which have a certain effect on slowing down the growth rate of myopia, but can not be cured at all.