The main symptoms of astigmatism are reflected in the following aspects: firstly, the vision is unclear, the distant scene will be more unclear, while the near scene is relatively clear, the higher the astigmatism, the more serious this symptom is; secondly, the edge of the object has a burr, the original should be clear and sharp edge of the scene, because the astigmatism causes the contrast to decrease, thus becoming blurred edge, with Third, when looking at light sources, there is a radiant halo, especially when looking at point-like strong light sources, the symptoms will be most obvious; fourth, when looking at straight lines, there may be skewed, distorted performance, especially the edge of the field of vision will be more obvious, the higher the astigmatism, this symptom will also be more serious; fourth, like to squint to see things, because when looking at things, the upper and lower eyelids around the slit, can effectively filter out A part of the light in the vertical direction, briefly improving the vision of patients with astigmatism.