Astigmatism of 200 degrees is not serious. Astigmatism is basically divided into mild, moderate and severe, below 100 degrees is mild, 100 degrees – 200 degrees is moderate astigmatism, and above 300 degrees is severe astigmatism. Astigmatism is mainly caused by the unevenness of the cornea, the normal human cornea has the same diameter, there is no astigmatism at this time, 200 degrees of astigmatism is the curvature of the two lines are not the same formation, need to be regularly reviewed. In adults, astigmatism is fixed at about 200 degrees, but some children may develop it. There is also a special case of cone cornea, which is generally considered a possibility only when the astigmatism is >300 degrees or more, and not for patients with 200 degrees. Therefore, astigmatism 200 degrees is a very common refractive error, patients can be solved by wearing glasses, there is no need to worry too much. Astigmatism 200 degrees is not very serious, usually squint less when looking at things, because squinting the upper and lower lids will cause pressure on the eyeball, and the pressure effect will lead to further development of astigmatism. In addition, if the patient’s vision loss is more serious in the near future or after wearing glasses, he or she needs to go to the hospital promptly to determine if the astigmatism is aggravated. If the aggravation is particularly large, the presence of a cone cornea should be suspected and prompt treatment is needed.