If the baby’s eyes flash, if it is in a certain kind of light or when taking pictures of the baby, you find a flash in the eyes, similar to the reaction of a cat’s eye in the dark, you should pay attention to the possibility of the existence of retinoblastoma. This disease is a malignant tumor and must be examined in a timely manner at a hospital. If the disease is diagnosed, regular chemotherapy or even removal of the eye should be performed. If the condition is caused by refractive error of the eye with astigmatism and the baby is within one year of age, the baby can be observed if he or she has good retrospective function. If, after the age of three, refraction and astigmatism greater than 150 degrees are found during a physical examination, the baby should be treated with glasses in a timely manner.