1, 20 days to 40 days after pregnancy is the critical period of fetal vision development: During this period, if the mother-to-be unfortunately infected with viruses (such as rubella, etc.), suffering from colds, the impact of chemical substances, the application of birth control, etc., will affect the development of the eye embryo, which can lead to eye deformities, so the mother-to-be in the early stages of pregnancy must pay extra attention to their own baby in the belly to provide a safe and good environment for the development of the baby. Expectant mothers should pay attention to avoid viral infections; do not contact with the use of chemical substances; before taking medication, be sure to consult with your doctor and clearly inform the doctor that you are pregnant, do not take medication at will. 2, the baby was born, vision only adult 1/30: 1 month of the baby, vision only light sense or only feel in front of the eyes of the object moving, but can not see the object. Generally 3 months after birth will pay attention to people, can follow the object in front of you to see, but the field of vision is only about 45 degrees, and can only follow the horizontal direction and in front of the eyes of 18 ~ 38 centimeters of the person or object. 3, protect the eyes, is to protect the ability to learn: the human sensory system into the brain of the total amount of information, 90% of which are obtained through visual. The visual development of the child into the brain every day more information, more clear, more accurate. This information opens the brain pathway, prompting brain cells to grow dendrites, axons, as well as promote brain nerve myelination, these changes can make the baby more and more intelligent, of course, learning ability is stronger. 4, baby bedside toys to hang the right position: many mothers like to tie a rope in the middle of the small baby’s bed rail, hanging some cute little toys. Because the baby is more farsighted, if the toys put particularly close, to make efforts to adjust the eyes in order to see, so that over time, the baby’s eyes longer to the center of the rotation, it may develop into strabismus. The right way is to hang the toys around the fence and change the position and direction of the toys frequently. In addition, with toys to tease the baby, do not put the toy too close to the eyes. 5, do not long-term fixed a position to feed: breastfeeding is best not to lie down for a long time or a position to feed, because the baby tends to peep at the fixed light, easy to cause strabismus. 6, when the baby sleeps or holding the baby out, do not cover his eyes: some mothers like to sleep or hold the baby out when the baby, with gauze, towels, etc. to cover the baby’s eyes. This is not a good habit. Infancy is the most sensitive period of visual development, if one eye is covered for a long time, it may cause the covered eye permanent vision abnormalities, that is, what doctors call “visual deprivation amblyopia”. Therefore, do not cover your baby’s eyes with objects. If the sunlight is too strong when you take your baby out, you can temporarily cover them with a scarf to avoid the bright light from irritating your baby’s eyes. When your baby sleeps at night, you can usually leave the light on. If you want to turn on the light, the light should not be too strong, to the lampshade up, or light from the ground, lest the light stimulate the eyes, affecting the baby sleep. 7, the baby room to pay attention to the quiet environment: a study pointed out that the noise can make the human eye on the brightness of the sensitivity to reduce, but also can make the stability of the vision clarity decline. For example, when the noise reaches 70 decibels, the clarity of vision restored to a stable state when it takes 20 minutes, while the noise at 85 decibels, at least one hour. Furthermore, noise will also make color vision, color field of vision abnormalities, so that the eyes of the symmetrical balance of moving objects response failure. Therefore, the little baby’s home do not place high noise household appliances, watching TV or listening to songs, do not put the sound too loud. 8, the precautions to prevent eye trauma: for babies less than 1 year old, mom and dad do not take any toys with sharp corners for him to play. The baby grows to about 1 year old will walk, will run, this time to be more careful to prevent eye trauma. Never give your baby knives, scissors, needles, awls, arrows, pencils, chopsticks and other sharp objects, so as not to let your baby fall and injure his eyeballs by walking unsteadily. In addition, do not let the baby firecrackers on their own during the holidays, because the baby can not master the burning technology, firecrackers explode when the huge external force, the violent impact on the eye will produce a series of eye injuries, such as rupture of the eyelid skin and conjunctiva, burns fundus damage and glaucoma, severe cases of total blindness. 9, school-age babies more to protect the eyes: (1) light must be sufficient: light to be sufficient and comfortable, light is too weak and because of the font can not see clearly closer and closer; (2) reflections should be avoided: desks should be lighted by the device, its purpose is to reduce reflections in order to reduce the damage to the eyes; (3) reading time is not too long: no matter whether you do your homework or watch TV, the time can not be too long to rest for a few moments every thirty minutes for better; (4) sitting posture should be upright: the eyelids and burn the fundus damage and glaucoma, serious and complete blindness. (4) sitting posture should be upright: not hunching over, the closer the more lying down to do homework can easily cause excessive tension in the ciliary muscle, which in turn causes myopia; (5) reading distance should be moderate: the distance between the book and the eyes should be 30 centimeters shall prevail, and the height of the table and chairs should be matched to the physique, and can not be forced to make do with it; (6) watching TV distance is not too close: when watching TV should be kept diagonally with the TV screen six – eight times the distance, every 30 minutes, the distance should be kept diagonally with the TV screen. –(6) Watching TV distance is not too close: when watching TV, you should keep six to eight times the distance diagonally from the TV screen, and take a break every 30 minutes; (7) Sleep is not too little, and rest is regular: lack of sleep makes the body easily fatigued, which is easy to cause pseudo-myopia; (8) Doing outdoor sports: often look into the distance to relax the eye muscles and prevent nearsightedness, and have more contact with the nature of the mountains and green fields, which is beneficial to the health of the eyes; (9) Nutrition should be balanced. (9) Balanced nutritional intake: Do not be partial to food, and pay special attention to the intake of vitamin B; (10) Regular vision testing: Anyone with abnormal vision should go to a vision health studio or ophthalmologist for further examination.