Astigmatism in the eyes is a common eye disease in children, mainly due to the following reasons: First, it is caused by congenital developmental abnormalities, usually related to genetic factors, if one or both parents of the child are myopic or astigmatic, the child is prone to astigmatism, which is caused by irregular developmental patterns of the cornea and lens, and different refractive power in the vertical and horizontal directions; Second, it is Second, it is caused by bad eye habits, such as prolonged and close eye use, watching cell phones and TV for too long, squinting for a long time, etc., which can lead to the formation of astigmatism; third, it is caused by cone cornea, which is due to the degeneration of collagen fibers in the corneal stroma, making the cornea cone-shaped and anteriorly convex, which can also cause the formation of astigmatism in children’s eyes.