What is the standard of normal vision for children?

What is the standard of normal vision for children1: Newborns can only see the outline of objects within 2-3 meters.

2: A two-month-old baby's eyes can move with the target's movements.

3: 4-month-old infant visual acuity.

4: 5-6 months old babies are regarded as only fighting rock power.

5:7 8-month-old babies have fixed vision and can look in one direction for a long time.

6: A one-year-old child can recognize eyes. Ear, nose and other organs.

7:2 vision reached in 3-year-old children.

8:3 4-year-old child with visual acuity.

9:5 Normal visual acuity in 6-year-olds is close and standard normal visual acuity.

Infant visual impairment test1. Observe eye movements

You can observe whether there is tremor when your baby's eyes move, and if there is a rapid movement of the eyeball, it is likely that there is a visual impairment.

2. Observe the ability of the eye to track objects:

Put a red velvet ball with a diameter of 10 cm and place it 15 cm away from the baby's eyes, and the eyes can follow the red velvet ball from right to left or from left to right to the midline for 1 and a half month baby; For a 4-month-old baby, the eyes can move 180 degrees from right to left or from left to right with the red velvet ball.

3. Observe whether there is a responsive smile

A 2-month-old baby will smile in response when someone is facing him and teasing him (but not making a sound or touching the baby's body).

How to protect your child's eyesight1. Regularly instill in children the importance of eyesight. Tell them that myopia will affect their appearance, and wearing glasses will not only hinder and be uncomfortable, but also affect the work and study of the queen, and will affect the beauty of girls and so on.

2. Arrange entertainment time reasonably. Many children shout and play games or watch cartoons without moderation, which over time causes great damage to their eyesight, and slowly their eyes become dry and uncomfortable, which eventually leads to the occurrence of myopia.

3. Teach children to protect their eyesight, such as blinking their eyes more when watching computers or TV, so that their eyes will not be dry and uncomfortable. Don't let your child become addicted to the computer, otherwise it will damage his vision.

The first step is to understand the development of vision in the eye.

a. The visual acuity of a 4-month-old infant is;

b. Visual acuity of 5-6 month old infants;

c, 7 8 months old baby has fixed vision, can long beam with time to see Zhenhong in a direction;

d. One-year-old children can recognize eyes, ears, nose and other organs;

e. 2 3-year-old children's visual acuity reached;

f. 3 4-year-old children with visual acuity;

g. Normal visual acuity in 5 to 6-year-old children is close to normal, while visual acuity is standard normal vision.

Therefore, the vision will generally be reached at the age of 6, so if the 6-year-old child's vision is above and above, then it is normal, and only need to do a good job of daily protection.

1. The time of close eye use should not be too long, every 40-50 minutes, you should take a little rest for 3-5 minutes, and look into the distance to relieve visual fatigue.

2. Read and write, play with the computer, maintain a correct posture, the height of the table and chair should be appropriate, and the distance between the eyes and the reading materials should be about 33 cm.

3. Mix whole grains, meat and vegetables, eat more vegetables and fruits, and don't eat partially. Lack of vitamins in food is prone to night blindness and dry eye disease, and lack of trace elements chromium and calcium in food makes it easy to suffer from myopia. In addition, it is also necessary to pay attention to regular supplementation of eye vision nutrients, not from the nutrients required by the eyes, enhance the anti-fatigue ability of the eyes, and better protect the eyesight.

Fourth, when reading and writing, the light should be moderate, not too strong or too dark, and the light should come from the left front, so as not to obstruct the vision of the hand shadow. The light should be soft, if it is incandescent, it should be between 25 and 40W, and it is not recommended to read in the sun. Because the intensity of light has a direct impact on pupil dilation, too strong light will increase the intensity of eye accommodation, aggravate the intensity of eye labor, and it is easy to cause myopia after a long time.

Generally, desktop lamps should be less than 40 watts.

5. Avoid reading while walking or reading in a walking car. Because the carriage is shaking, the body is shaking, and the distance between the eyes and the book cannot be fixed, the burden on the glasses will increase. Often, this is likely to lead to myopia.

6. Actively participate in physical exercise to enhance physical fitness. As the eyeball follows the target, the ciliary muscles continue to relax and contract, and the synergistic effect of the extraocular muscles can increase the blood perfusion of the eye, promote the metabolism of the eye, and thus reduce eye fatigue. Moreover, the quality of physical fitness is also closely related to the occurrence of myopia in children.

Malnourished and weak children are prone to myopia.

7. Insist on doing proper eye exercises. By massaging the acupuncture points around the eyes to enhance the blood circulation of the eye socket, improve neuronutrition, eliminate the excessive congestion in the eye, and achieve the purpose of relieving eye fatigue, it is conducive to the prevention and treatment of pseudomyopia in adolescents, and is a good way for adolescents to self-care their eyes.

8. Eat less candy and high-sugar foods. Too much sugar will produce a large amount of acidic substances in the blood, and the acid will be combined with the salt in the body, especially calcium, which will cause a decrease in blood calcium, which will affect the toughness of the eye wall, make the eye axis easy to elongate, and promote the occurrence and development of myopia.

Different ages, standards are different, if you want to know whether the development is normal, it is recommended to go to a professional institution for testing.

The most important feature of the human eye is the ability to recognize details, often expressed in terms of viewing angle resolution, visual acuity at age 5 and age 6 or above. The normal human eye vision is above.

Children between the ages of 1 and 7 must choose toys that do not have sharp angles in order to protect their eyes. At the same time, parents and educators should always educate their children not to play dangerous games, to read books in bright and soft light, and to avoid strong sunlight. The posture of reading the book should be correct, the distance between the book and the eye should be kept at least 30 cm, and special attention should be paid to whether the brightness of the light is reasonable.

1. A person's normal vision is generally normal vision, according to the standard eye chart.

2. Visual acuity refers to the ability of the retina to distinguish images. However, when the refractive medium of the eye (such as cornea, lens, vitreous, etc.) becomes cloudy or has refractive errors (including myopia, farsightedness, astigmatism, etc.), vision will still decline even if the retina is well-functioning. The opacity of the refractive medium of the eye can be surgically used, while the refractive error needs to be corrected with a lens.

Normal unaided visual acuity is at or above, and if this vision is not satisfied, then it must be corrected in time. Correction generally requires attention:

1. Pay attention to the time you spend with your eyes.

Children's eye development is not perfect, the ability to work is low, every time you read or write for a small time, you should let the child go to the outdoor Kaizen activities, do games, look into the distance, or observe the flowers and green trees, so that the tense eye muscles are relaxed, eliminate fatigue. In addition, it is necessary to make the child's life regular, have enough sleep, and let the eyes get enough rest.

2. Pay attention to the light of your eyes.

Do not allow your child to read or write in dark light or sunlight. If a 25-watt light bulb is used indoors at night, the distance between the book and the bulb should be within 1 meter. If you use a 60-watt bulb on a stool, the distance between the book and the bulb should be 1 2 meters.

Cloudy days, dusk, weak light in the moonlight, and strong light in the sun are not suitable for reading and writing. When watching TV, it is necessary to maintain a suitable distance, which should generally be 5 7 times the diagonal length of the phosphor screen. The time to watch TV should not exceed 2 hours at a time.

3. Pay attention to eye exercise.

Physical exercise can enhance blood circulation and metabolism, supply more nutrients to the eyes, and enhance the resistance of the eyes, which is an indirect exercise for the eyes. The direct exercise is eye exercises, which is based on the massage, massage, acupuncture and acupuncture acupuncture points of Chinese medicine, combined with jujube Kuanhui medical sports, which is a scientific method to protect eyesight. Parents should learn the basic knowledge of eye exercises, give specific guidance and often urge their children to do eye exercises, and persevere.

4. Pay attention to eye nutrition.

In order to protect children's eyes, children can eat more carrots, animal liver, lean meat, to supplement vitamin A, or regularly supplement the comprehensive nutrition of the eyes with Leyan vision nutrients, and at the same time, it is also necessary to appropriately consume millet, tofu, animal liver and other supplements of vitamin B2, so as to avoid night blindness, corneal malacia, red eyes, dry itching and other symptoms. Eating too much sugar will harm your child's eyesight, so your child's sugar intake should be controlled.

5. Pay attention to regular inspections.

Regular check-ups are because children's eye structure, binocular visual function, and intelligence are still in the process of continuous development after birth, and the content of the noisy mountains that can be examined is different at different ages. The usual age of ophthalmologic examination is generally 2-7 days after birth, 42 days after birth, 3 months, 6 months, and 1 year of age, and then once a year. In this way, the problem can be detected early and corrected early, instead of waiting until the vision has deteriorated and there is a vision problem before going for a check-up.