The doctor replied:

ametropia is a common ophthalmic disease, which is mainly divided into myopia, hyperopia and astigmatism. For three-year-old children with ametropia, the treatment needs to be determined according to the severity of ametropia. If the vision is within the normal range, generally speaking, no treatment is required, However, if there is a significant decline in vision, it is necessary to wear glasses for correction as soon as possible.