To prevent astigmatism from worsening, patients should pay attention to good eye habits, such as not squinting to see things. It is also important to have a balanced diet and not to eat too much sweet food. Astigmatism is a type of refractive error, mostly caused by congenital developmental abnormalities, but bad eye habits can also cause astigmatism, such as squinting to see things, the eyelids will exert pressure on the cornea, which will compress the cornea deformation caused by astigmatism, so patients must avoid bad eye habits. A balanced diet is also useful in controlling astigmatism, and patients should especially pay attention to more vitamins and less intake of too sweet food. A diet high in sugar is detrimental to the health of the sclera, and also tends to aggravate astigmatism if the sclera is unevenly dilated. When astigmatism significantly affects vision, it is recommended to seek medical attention to correct the problem in order to avoid adverse effects on the health of the eyes.