The ray ban is the soul of the "windows." Let your baby have a pair of bright, beautiful ray ban, is every parent's wish. Visual development process in the baby, the baby in the care of many aspects of the cheap ray bans, the parents have a lot of doubts, a lot of confusion. Baby's visual development features. First, the critical period of visual development of the fetus during pregnancy period Eye embryos in pregnancy to 40 days after 20 days, during which, unfortunately, if infected mothers (such as rubella, etc.), suffering from a cold, by the effects of chemical substances, the application of miscarriage and other factors will affect the ray ban embryos development, can cause ray ban malformations, so trimester mothers must pay special attention for their unborn baby to provide a safe environment favorable development. Pregnant mothers should be taken to avoid infection; Do not touch the use of chemical substances; medication before, be sure to consult a doctor, and clearly inform the doctor that you are pregnant, must not be arbitrary medication. Childbirth, if handled properly, it may damage the child's ray ban, causing visual impairment. ● radical production, excessive pressure on the birth canal, the newborn brain and the body has some damage; ● forceps is not appropriate, such as the location is inappropriate, folder or optic nerve in the eye will damage the ray ban, optic nerve, causing the eyeball rupture; ● If the newborn excess oxygen will affect the child's visual development; ● production process is too long, it will cause the child retinal hemorrhage, if excessive bleeding, may not be fully absorbed, will affect the child's vision; Before and after childbirth, many factors can affect the baby's vision, the mother must work closely with doctors, towards the successful expulsion of the fetus, to avoid damage. Second, the newborn baby can see how far? Full moon baby will look people do? The baby was born, will react to light, but the ray ban are not fully developed, the visual structure of the optic nerve is not yet mature, vision only adults 1 / 30.1 month baby, only light perception vision or just feels that a moving object, but can not see the objects. Generally only after 3 months of birth to people, can follow to see in front of the object, but only 45 degrees field of view, and tracking, as only 18-38 cm in the horizontal direction and in front of the person or thing. Third, the newborn baby likes the color and shape of the articles? Retina of the ray ban uk, there is a cone cells, which is the color receptors, by the three-color theory, red, green and blue are the three basic colors of nature, cone cells containing these three colors is adapted to sense color component. Main components of each color sensing excitement caused by a basic color, while the other colored light although it reacts, but the extent is limited. Therefore baby more like red, green, blue and other three kinds of colors. Newborn babies prefer watching more complex shapes and curves, as well as contrast colors. Fourth, when the baby will look with your ray ban Mom? According to the baby's visual development, at least in the three months later to find her mother with the ray ban.