Treatment of astigmatism is not required for patients with mild astigmatism without symptoms. Moderate to severe astigmatism is currently treated by wearing lenses and excimer refractive surgery. However, most of them cannot be cured, but can be corrected. Astigmatism, as the name implies, means “light is spread out”. When light enters an eye without astigmatism, it will be focused precisely on the retina, while eyes with astigmatism often cannot form a single focal point, but will form two or more focal points. So eyes with astigmatism see things with double shadows and blurring. Since most of the eye’s light source comes from the cornea, the traits of the cornea determine whether the eye has astigmatism. In childhood, the cornea is shaped like a rugby ball, but as we age, the anterior and posterior diameters and the left and right diameters gradually change, and in old age, it becomes a longitudinal “rugby ball”, gradually forming astigmatism, which is the main reason. It is impossible to restore the longitudinal rugby ball to the horizontal level, which means that it is impossible to cure astigmatism, but it can be corrected by means of glasses and surgery. To sum up, astigmatism occurs just like human aging, it cannot be cured, but there are many ways to correct it, it can be corrected by lenses, surgical correction, but it is not a cure.