Newborns are born with some vision, but it is poor, with a field of view of 30 cm or less and a black and white blur. The infant has vision at birth, and even in the mother’s womb, there is already a sense of light. However, newborns have poor refractive error, imperfect neurological and visual system development, physiological farsightedness, and can only see about 15-30cm, but for the contrast of the pattern can be seen more clearly, such as black and white patterns. At around 2 months of age, infants can see objects and people directly in front of them, and perform simple gaze and pursuit; at more than 3 months of age, their visual field is relatively expanded and they can see people or things that are far away. Newborns like to see brightly colored objects, especially red-colored objects, parents are advised to buy toys or cards with brighter colors and let the baby swing after them, which can effectively exercise the baby’s eyesight and visual sensing function.