Astigmatism is mainly characterized by visual fatigue and impairment, amblyopia, strabismus, and sometimes headache and other symptoms. 1. Visual fatigue and impairment: patients with lower degrees of astigmatism can not be accompanied by any symptoms, no abnormal performance of the eyes to see, but a higher number of astigmatism can be manifested as visual fatigue, which is the most obvious visual symptoms of astigmatism, this symptom is likely to appear in the close range of the eyes, the patient headache, brow bone pain, burning sensation of the eyes, a sense of irritation and tearing and other symptoms. Visual impairment is also one of the main symptoms of astigmatism, the patient’s eyes can not get a normal visual image, blurred vision, vision distance vision and near vision are not clear. 2. Amblyopia and strabismus: Some patients with astigmatism will show symptoms of amblyopia and strabismus. If the patient is mixed astigmatism of medium or high degree, he/she cannot get clear visual image when looking near or far, and the retina cannot get normal light stimulation, which makes him/her more prone to amblyopia, which manifests itself as a simultaneous decrease in distance vision and near vision of the naked eye, and the improvement of corrected visual acuity is not obvious. Strabismus is a unique complication of astigmatism in refractive error, patients with parallel oblique astigmatism in the observation of objective objects, the contour line of the gaze target will have a certain degree of skewed feeling. It is recommended that patients go to a specialized hospital for examination according to their own symptoms in a timely manner, so as not to delay the condition and cause serious consequences.