Before the age of 6 is a critical period for children’s visual development. During this period, any adverse factors can affect children’s visual development, causing them to lag behind and leading to amblyopia, which can have an impact on their future life and work. Early detection and reasonable treatment can minimize or minimize the damage to vision. Therefore, it is crucial to evaluate your baby’s vision as early as possible, especially to understand whether your baby’s vision is balanced and consistent in both eyes. Since infants and young children are limited by their cognitive ability to correctly point to the visual acuity chart and perform some other psychophysical methods, it is very important to perform objective visual acuity assessment on children. The visual evoked potential (VEP) is an electrical response to a visual stimulus recorded on the skin surface of the head in the occipital visual center. it primarily reflects the effectiveness of the cone cells in the center of the retina at 6-10 degrees and is not dependent on the subjective response of the subject, thus providing the maximum objective response of the visual system. the VEP provides a rapid method of visual acuity screening and requires a lower level of patient cooperation than other examination methods. Several investigators have concluded that the VEP technique is valuable for assessing visual acuity and contrast sensitivity in infants and children. Beijing Children’s Hospital is one of the very few medical institutions in China that conducts visual electrophysiological examinations of children’s eyes. With the advanced German Roland electrophysiological examination high-end instruments, the efficiency and accuracy of its tests are among the leading ones in China. In particular, the addition of animated patterns to the tabletop stimulator’s surgical black-and-white checkerboard flip can effectively stimulate children’s interest and increase cortical excitability, overcoming the difficulty of children’s inattention during the examination and increasing the accuracy of the examination. The German Roland visual electrophysiology instrument uses the International Society for Clinical Electrophysiology of Vision (ISCEV) technical standards and a special signal amplifier for ophthalmology to perform international standard examinations. It can accurately detect functional changes in the optic nerve and retina, with short examination time and small systematic errors. The German Roland electrophysiological examination program is very comprehensive, including P-VEP, F-VEP, full-field ERG, P-ERG, multifocal ERG, EOG, and contrast sensitivity function. In addition, there is a unique objective visual acuity assessment function, Sweep VEP, which can automatically calculate the visual acuity value and provide an objective visual acuity data for children who cannot cooperate with the visual acuity examination, including children with cerebral palsy, at an early stage, which provides a basis for further ophthalmic treatment. VEP has a wide range of clinical applications, such as observation of the efficacy of amblyopia treatment in children and evaluation of prognosis, diagnosis of cortical blindness and evaluation of prognosis, understanding the presence of serious lesions in the fundus in cases of vitreous opacities, cataracts and other refractive interstitial clouding and prediction of post-cataract vision, detection of childhood strabismus, moderate to high refractive errors, ptosis, corneal opacities and other diseases affecting visual development have good The diagnostic value of the test is better than that of the test for diseases affecting visual development, such as multiple sclerosis, optic neuritis, Leber, visual acuity assessment of children with cerebral palsy and other neurological diseases. The children are painless during the examination and only need to watch the TV screen for about 10 minutes to obtain the objective visual acuity of the children, which is very meaningful for the diagnosis, efficacy observation and prognosis assessment of the disease. For uncooperative younger children and children with intellectual disabilities who cannot cooperate, flash VEP can address the child’s active nature. VEP can be performed while your baby is sleeping, which can provide a timely and early understanding of your baby’s visual development and lay a good foundation for the next step of further development.