Astigmatism is mainly caused by congenital genes and acquired eye diseases. Generally, once astigmatism has developed, it cannot be recovered. The human eye is not perfect. Some people have a curved cornea at one angle and a flatter cornea at other angles, which prevents light rays passing through different angles from converging on the same focal point, and thus cannot be accurately focused on the retina to form a clear image, a condition known as astigmatism. Astigmatism in children is mainly determined by genes, just as facial features and body height are determined by genes. Of course, there are also secondary astigmatism, caused by inflammation, tumors, trauma, surgery, and other factors in the eye that cause changes in the shape of the cornea. Secondary astigmatism may recover to some extent after treatment of eye diseases, but genetically determined astigmatism cannot be recovered. In daily life, there are some acquired causes of astigmatism, and good eye habits can prevent and reduce the progression of astigmatism: 1. no eye rubbing, no squinting to see, no lying down to read; 2. intermittent eye use: after every half hour of close eye use, rest for about 10 minutes or look into the distance; 3. Reasonable diet, more outdoor activities, regular eye examination and health care. In summary, children with astigmatism of 200 degrees may recover to some extent after treatment if it is caused by eye diseases, but genetically determined astigmatism generally cannot be recovered, and good eye habits can prevent and reduce the progression of astigmatism.