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Normal. Many people think that as long as the vision can reach above (logarithmic eye chart, it is considered normal. In fact, vision can only indicate that part of the person's vision is normal. Strictly speaking, the criteria for normal vision also include the following:
1. Central vision: that is, people usually look at the visual acuity chart to determine the visual acuity, including distance visual acuity (looking at the eye chart from 5 meters away) and near visual acuity (looking at the eye chart at 30 cm). 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". Generally speaking, the peripheral vision range of 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.
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Tallest, what else do you want?
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For ordinary people, it can be said that it is the best eyesight. Currently, the best eyesight in the world in the former Guinness Book is maintained by the Maasai people, and the eyesight is.
At present, there are three main recording methods in China, the most commonly used international standard eye chart uses the decimal recording method, and the decimal visual acuity of normal people is. Some hospitals in China use a logarithmic eye chart, which corresponds to the five-point visual acuity recording method, and the logarithmic visual acuity of normal people is.
Visual acuity refers to how far away an object can be seen clearly under the premise of a 1-point perspective, regardless of the fractional eye chart, decimal eye chart, and logarithmic eye chart, which are all made according to this principle, and it is generally classified as normal vision that can be seen clearly under the perspective of 1 point.
Everyone's minimum visual threshold is different, it is determined according to the density of each person's retinal pyramidal cells, when the density is higher, the visual threshold is higher, and the minimum viewing angle is smaller, so there is even higher visual acuity.
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.
Therefore, for normal people, the eyesight can be said to be the best. We also need to pay attention to eye habits and eye hygiene to protect our eyesight.
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The best thing about your eyesight during a physical examination is that it is of course very good.
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It's the best and then it's good, the lower the number, the worse the eyesight.
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's eyesight is already very good, because the lower the eyesight, the better the eyesight, you are ranked below the bottom, then the eyesight must be better, only if you can't even see the front rows above, this eyesight is relatively poor.
So you don't have to worry about your eyesight, of course, the premise is to protect your eyesight and maintain this level.
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The method of measuring vision is to to, which is equal to from to, so your eyesight is very good, and it is not easy to have a good eyesight!
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's eyesight is already very good, which means that your eyesight is well maintained. Basically, if the vision is low, it can be said that there is a possibility of myopia. Nowadays, there are too many people who are nearsighted, and children are exposed to electronic products too early, which is very harmful to their eyesight.
Many elementary school students are already wearing glasses, and myopia is becoming more and more noticeable at a young age. You have good eyesight, but you should always maintain good eye habits!
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The naked eye vision is normal, everyone's perspective is different, the vision seen is also different, not everyone can see, only people who have recessive farsightedness will see, as long as the naked eye vision is not lower than, it is normal.
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It's good enough, now society is full of mobile phones, tablets, TVs, and it's good to be able to meet this vision requirement. To keep it well, many young people do not learn well but fall into a myopia is not worth it.
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The eyesight is already very good, and now with the development of electronic products, many students are nearsighted, even if your eyesight is normal, if you want to enter Air China as a pilot, there is no problem.
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This eyesight is already very good, and many people are.
You're already amazing.
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You're too pretentious, your eyesight, it's fine, it's not myopia, so don't worry.
Suggestions: Generally less than, even if it is myopia. It is recommended to continue to maintain good eye habits in the future. Watch less TV and use less mobile phones.
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How many people envy your eyesight It doesn't matter if you can't see the last line clearly, your eyesight is enough to use.
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Visual acuity, which is the visual acuity found on the logarithmic eye chart, is equivalent to the international standard eye chart. Therefore, such vision should be relatively normal. Generally, people over the age of six, as long as the vision is reached, that is, it is considered normal.
If it is found to be less than or less, it is necessary to find out the cause of the vision loss, most patients may be caused by refractive error, and the corrected vision can be achieved or corrected by wearing glasses.
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The eyesight is already very good, and the standard vision stipulated by the state is, that is, because of personal physique and other reasons, most people's best eyesight can only be seen, so the eyesight is already very good.
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That is, it is a good eyesight, and you need to pay attention to eye hygiene and avoid long-term contact with electronic products, which can effectively prevent and control vision loss.
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Don't worry, it's normal vision for the average person, or a better indicator. Explain that there is no problem with your eyesight.
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Your eyesight is already very good.
Pay attention to keep.
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My eyesight is left and right, more than ten meters away blurry, 100 meters away from humans and animals, you are already very good, my best eyesight, has been declining after having a mobile phone.
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The eyesight is the best, and the eyes don't get any better than that. You can apply for a flight fighter.
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Hello, the general vision is normal when the standard vision is normal, and the vision is good.
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This eyesight is already the standard for being a pilot!
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Hello! Generally, 5.0 is considered normal vision, and 5.2 is very good. It is recommended to develop good eye habits and pay attention to rest to continue to maintain good eyesight.
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This eyesight is already good, very good.
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Now vision is the standard eyesight! 's eyesight isn't better?
Vision is mostly normal. Poor vision doesn't mean it's myopia, it can be something else. Refractive error includes myopia, farsightedness, astigmatism, which can lead to vision loss, but the vision is close to normal, if you usually do not do particularly fine work, the vision requirements are not high, this vision can fully meet your life.
My eyesight is mild myopia, not that it is particularly normal, the normal is five, it is particularly normal, that is, it is already a little mild myopia, for the sake of safety, you had better let the child pay attention, or give him a pair of glasses, in this way, the power will no longer be long, or the tender degree will grow higher and higher.
A person's normal visual acuity is related to age, and the visual acuity is normal after the age of six, and the visual acuity is considered normal within the age of six.
From the perspective of eyesight alone, you can, but pilots are extremely demanding, not good eyesight, you have to be very good in all aspects.
Good horses don't eat back grass.
The rest is fine. >>>More