A 4-year-old with severe astigmatism does not necessarily need to wear glasses permanently. As an adult, glasses can be removed surgically. Astigmatism in 4 year olds often causes amblyopia in the eyes. The purpose of wearing glasses is to treat amblyopia while helping the child to see clearly. Children’s eyes are in a state of continuous development, and the corresponding refractive error may change, so they need to wear glasses all the time, and can change glasses in time according to the refractive error. When adults, the development of the eyeball tends to stabilize, then, the astigmatism and visual acuity is basically stable. At this time, you can consider through the corneal laser surgery or implantation of astigmatism-correcting IOLs to correct vision, to achieve the purpose of removing glasses. Four-year-old children with severe astigmatism are advised to go to a regular hospital for examination before deciding on the treatment plan.