With the development of society and the popularization of electronic products, there are more and more children with visual abnormalities in children’s outpatient clinics, and the age of first consultation is getting younger and younger. Myopia, astigmatism and amblyopia should be detected and treated early. So how old should a child be for an eye examination? In April 2013, the National Health Planning Commission issued the “children and vision care technical specifications” requirements: infants and young children should be born after the following time for eye examination: 1, 42 days (congenital anterior segment developmental eye disease screening) Item: eye appearance, accessory tear examination, light response, slit lamp, red light reflex 2, 3 months (follow and other eye movements) Item: eye appearance, transient reflex, red ball test, slit lamp , red light emission 3. 1 month (screening for congenital strabismus and refractive error) Items: ocular appearance, unsuccessful items at 3 months, observation of visual behavior, eye position examination, eye movement examination, visual acuity refractive screening 4. 1 time every 6 months after the age of 1 year (screening for strabismus and refractive error) 5. 1 time after the age of 5 years, 3 months – 6 months (screening for myopia)