Astigmatism of 550 degrees can significantly affect a child’s vision and is therefore a more serious condition. Astigmatism is a common ophthalmologic disease, belonging to a type of refractive error, generally due to developmental abnormalities or squinting to see things and other bad eye habits resulting in different refractive power in different directions of the cornea and caused by refraction into the eye can not be converged to form a perfect focal point, resulting in the patient to appear in the vision of the double vision, vision loss and other uncomfortable symptoms. The severity of astigmatism is related to the degree of astigmatism, the higher the degree of astigmatism, the more obvious the impact on the patient’s vision, so 550 degrees of astigmatism is a more serious situation. It is recommended that patients with high astigmatism should consult a doctor to evaluate their condition and follow the doctor’s instructions for treatment.