Babies can see just after birth, except that the range of things they see at birth is relatively close, and they see shapes and objects that are almost close to the size of the breast when they are first born. By 1 week after birth vision tends to be nearsighted and can basically see objects 8-15 cm. By 2 months of age, vision is more focused, can see moving objects, will look at the person holding. By 3 months of age, they are more sensitive to color and can distinguish between red and green, especially red, and at this time, if they place small toys of multiple colors in front of them, red will attract more attention. By 4 months of age, the development of vision is more perfect, see things more clearly, hand-eye coordination will also be better. By 5 months of age, the eyes, body and mouth can effectively cooperate with each other and recognize more and more colors, so the mother can see clearly and the toys can be seen clearly. By 6 months of age, they are able to better perceive color spectrum, see with similar clarity and color as adults, their eyes can follow objects up and down by 90 degrees, and they can gaze at objects at longer distances. By 7 months of age, the world in their eyes is becoming richer, but they still like to reach out and grab things that are closer. By 8 months of age, the spatial awareness is further enhanced, and when they see something they like, they will crawl over to get it themselves. By 9-10 months of age, vision is better developed and follows the movement of objects, and by 1 year of age, vision is basically at the same level as adults.