Many parents in the clinic ask how astigmatism is formed. The formation of astigmatism may have genetic factors, eye development factors, frequent blinking and squinting factors, but the exact cause is not clear. Currently, astigmatism cannot be cured. It may be possible to cure some of the low astigmatism in adulthood with laser, but moderate to high astigmatism is difficult to cure surgically. As an adult, children with low astigmatism can consider whether to wear frames for a long time, while those with moderate to high astigmatism should insist on wearing glasses for correction, either with or without frames and opting for toric RGP lenses for better appearance and visual clarity. It is recommended to choose frame glasses for children because of the comfort and good fit, RGP care for children is still very difficult, there is a risk of corneal infection, and also easy to damage the lenses, RGP lenses are more expensive.