1 month: One week after birth, babies tend to be nearsighted, can focus their vision on objects 8 to 15 cm away, and are also able to follow moving objects with their eyes. By a little over 1 month, babies can already see objects within 15-30 cm of their eyes and can begin to gaze at objects. 2 months: The baby’s visual concentration becomes more and more obvious and likes to look at moving objects and familiar adult faces. Can coordinate gaze at objects, can distinguish colors, but can not distinguish shades, within 90 degrees of the eye can move with the object, when there is an object quickly close to the eyes, will appear blinking and other protective reflexes, gaze at small hands for more than 5 seconds. Guangzhou Yuexiu District Children’s Hospital Eye, Ear, Nose and Throat Department Tang Xiaoyun 3-4 months: Can fix the line of sight, see objects about 75cm away, visual acuity is about 0.1. The time of gaze is clearly extended, the line of sight can also follow the moving objects. Sensitive to color, babies have a preference for color, like to see bright and vivid colors, especially red, do not like to see dull colors. Their preferred colors in order are red, yellow, green, orange, blue, etc. Their favorite color is red. 5-6 months: Blinks more often, can see objects accurately in front of them, and will pick them up and play with them in front of their eyes. Hang hand rattles next to the bassinet or crib and observe if your baby notices something somewhere because of the sound when he or she accidentally touches the hand rattles. at 6+ months, your baby’s gaze can turn 90 degrees up and down following a moving object. At this time, the baby’s vision can reach 0.1, can look at objects at a distance, such as the street pedestrians, vehicles, etc.. 7-8 months: can identify objects near and far and space, like to look for those suddenly missing toys. Play “peek-a-boo” with the baby, observe the baby’s excitement and timely response or not. 9-10 months: The eyes can move up and down with moving objects, follow falling objects, look for dropped toys, and identify the size and shape of objects and the speed of movement. Can see small objects, can begin to distinguish simple geometric shapes, and observe different shapes of objects. 11-12 months: The sense of depth of vision begins to appear, which is actually a kind of stereoscopic perception. 1-2 years: After the age of 1 year, they like to read books, can distinguish objects, and can imitate actions. Under the continuous stimulation of the external environment light, the baby’s vision is gradually developing, by 1.5 years old, his vision can reach 0.4, can see tiny things such as crawling bugs, mosquitoes, and can gaze at small toys 3 meters away. He can also distinguish simple shapes, such as circles, triangles, and squares. 2-5 years old: Can judge the spatial concepts such as object size, up and down, inside and outside, front and back, and far and near. The visual development of both eyes is most vigorous. 2-3 years old, the visual acuity reaches about 0.5-0.6, which is close to adult vision, but it is very easy to lose vision at this time. At the age of four or five, the visual acuity is about 1.0, and various ocular physiological reflexes have been formed and tend to be stable, so it is not easy to lose vision at this time. Age 6: At the age of six or seven, the vision of adults is entered. The stereo vision function can not reach normal until the age of 9.