Every parent wants their children to be healthy, lively, smart and have bright eyes, but among the many children with seemingly normal eyes, some may suffer from refractive error, amblyopia, strabismus, some may have congenital cataracts, glaucoma, and some may have some lesions of the fundus such as retinal hemorrhage, retinopathy of prematurity, retinoblastoma, congenital developmental abnormalities and other eye diseases These children have poor vision in one or both eyes. These children do not appear to be different from normal children in appearance and are not seen until after they start school, at which point the best time to treat childhood eye disease is missed. Because most children, especially newborns and infants, do not express their poor eye vision and do not actively request to see a doctor, it is not easy to detect eye diseases early, but most of these eye diseases are closely related to visual development and need to be treated promptly and reasonably during the critical period of visual development (some must be before the age of half a year, and some must be between 3 and 5 years old), and treatment beyond the age of 12 has basically no hope of cure The risk is greater than simple myopia, which leads to lifelong low vision in one or both eyes and cannot be improved by wearing glasses. If everyone can get a newborn eye screening at birth and insist on a comprehensive eye examination at least once every six months before the age of 7, common eye diseases that interfere with visual development can be detected and treated in a timely manner, so that visual function can develop normally.