A 6-year-old boy with 50 degrees of myopia needs to have his pupils dilated. The 6-year-old boy is in the growth and development period, the ciliary muscle regulation ability is very strong. If your child is nearsighted, the first thing to consider is to go to a regular hospital for dilated optometry, in order to accurately understand the refractive state of the child’s eyes, but also to distinguish between pseudomyopia and true myopia. Pupil dilation refers to the application of drugs to make the ciliary muscle in a state of complete paralysis, losing the ability to regulate, so the results of dilated optometry is more accurate than the results of ordinary optometry. If your child has pseudomyopia, he or she can return to normal after practicing good eye habits and paying attention to dietary habits. If it is true myopia, you need to follow the doctor’s instructions to correct your child’s vision by wearing eyeglasses. After your child is nearsighted, you need to help him or her to develop good eye habits, avoid eye fatigue, and increase the amount of time he or she spends outdoors.