How does child eye astigmatism cause

Astigmatism is a kind of refractive error of the eye, and corneal radian related, refers to parallel light after refraction of the eye refractive system, and does not converge into a single point, it can not form a clear image, this situation is called astigmatism. Astigmatism brings a great impact on the patient's vision, in addition to causing visual fatigue, more will affect the child's visual development during the development of children, resulting in amblyopia, strabismus and so on. Children's astigmatism occurs in childhood. This stage is caused by eye dysplasia. It can be divided into two types: regular astigmatism and irregular astigmatism. Regular astigmatism can be corrected by wearing glasses. Irregular astigmatism is a complex comprehensive situation that cannot be corrected simply by wearing glasses. In addition, in addition to congenital astigmatism, acquired myopia, poor eye hygiene or keratoconus may cause astigmatism, so even if it does not occur in childhood congenital astigmatism, acquired astigmatism may also occur.