If a child has a very small degree of astigmatism, such as 25 degrees, 50 degrees or 75 degrees, most of this astigmatism is physiological, and as the child grows older, the cornea gradually develops, and it is possible to re-form a regular corneal shape during this process. This mild astigmatism may return to normal on its own. Even if the astigmatism exists for a long time, because the degree is relatively small, it usually does not affect the vision and does not need to be treated, nor do you need to pay too much attention to it.