The best way to prevent myopia is to take your child outdoors, develop good habits, and have regular vision checkups, etc. If your child has no farsightedness reserve, you need to prevent myopia. 1. Outdoor exercise: If your child has no hyperopia reserve and needs to prevent myopia, the best way is to take your child outdoors more often, so that your child can receive more outdoor light, which will stimulate the secretion of dopamine in the retina and effectively improve the situation of no hyperopia reserve. 2. Adopt good living habits: Adopt good eye habits, sleeping and eating habits, and control the use of electronic products. You can eat more food rich in carotene and vitamin B in your daily life. 3. Regular vision checkups: Regularly checking children’s vision is the best way to prevent myopia, especially important for children with no reserve of hyperopia. If your child does not have hyperopia reserve, and if he/she does not have symptoms such as blurred vision and eye discomfort, he/she does not need to worry too much, and the above methods can play a certain role in improving his/her eyesight. If the child has myopia symptoms, need to go to the regular hospital as soon as possible, so as not to miss the condition.