In case of higher degree astigmatism, it causes the problem of distorted vision to some extent. In addition, patients may have other symptoms such as visual fatigue, blurred vision, and visual disturbance, which need to be corrected by wearing columnar lenses. There are also three types of astigmatism in general, cis-ruled astigmatism, retro-ruled astigmatism and oblique axis astigmatism. Conformal astigmatism is easier to correct than the other two types of astigmatism, and the symptoms are relatively milder. In addition, it is important to make sure that the axial aspect of the astigmatism is addressed during the prescription process, otherwise it can cause discomfort. In addition, for younger children, it is more important to correct the treatment in time. Avoid other refractive error problems in later development.