How much is vision normal? What is normal vision?

A child's eyesight is more or less normal.

It is normal vision, slightly short-sighted.

1. Central vision: that is, the visual acuity determined by people usually looking at the eye chart, including distance vision and near vision. Patients with hyperopia present with better distance vision than near vision; The opposite is true for patients with myopia.

People with astigmatism have poor distance and near vision. When the near and distance visual acuity is above or above, the central visual acuity is normal.

2. Peripheral vision: When the eyes are fixed on a certain target, the range that can be seen in the non-fixation area is large or small, which is called peripheral vision, which is often referred to as "residual vision". The range of peripheral vision in a normal person is quite large, up to 90 degrees on both sides, 60 degrees above and 75 degrees below.

Patients with myopia and night blindness have poor peripheral vision, and some fundus diseases can also cause peripheral vision loss.

3. Stereopsis: Stereopsis is a kind of superlative vision, that is, on the basis of normal vision in the center of the two eyes, through the harmony of the two hemispheres of the brain, you can feel the distance relationship between objects in space. Some people have normal central vision but abnormal stereopsis, which is medically called stereopopia.

To prevent myopia, we must learn to use our eyes scientifically, read and write in a correct posture, keep the distance between our eyes and books about one square foot, and read books continuously for no more than one hour, and look at the distance or look at green plants every once in a while. Do more eye exercises during breaks, eat more carrots, apples, bananas, cuttlefish, eggs and other foods, and take a walk or exercise outdoors in your spare time.

Children under the age of 18 are myopic and can recover from timely treatment after myopia due to their strong adjustment of the eyeball. It is recommended to take Joy Vision Nutrients, myopia can recover quickly, and the younger the better. You only need to take one sachet twice a day, with warm water, and stick to it for a period of time.

The standard visual acuity of the eye is on the left and right, that is, the left and right. Usually adults or children over the age of 6 should have left and right vision. As a child is born, his vision may be around the same time, and as he grows older and grows and develops, the visual function of the eye is gradually fully developed.

At about half a year old, you may have left and right vision, by 1 year old you may have about vision, 3-4 years old you should have about vision, generally 4-6 years old should have about vision, and over 6 years old you should have standard vision. If your child's visual acuity is significantly lower than the normal visual acuity of his peers, he or she will need to undergo an optometry test for refractive errors. If there is myopia or farsightedness, glasses are needed to correct the prescription and improve vision.

Normal vision is. If you feel that your vision is blurred, you can go to the optical store to check your eyesight, verify it on the eye chart, if it is normal, if it is lower, it is mild myopia, if it is lower than it, it is high myopia, and you need myopia glasses.

Our normal people's eyesight is generally around the right.

Normal visual acuity:

Reach the above.

Normal vision is considered normal.