Corrected visual acuity 5 0 is how many degrees of myopia

Correction of vision.

It means that the vision after wearing glasses reaches yes, and it depends on how many degrees of myopia you pull, which is not stipulated, but generally speaking, the higher the degree of myopia, the improved vision after correction is not very good, if it is said that the naked eye vision is above and the corrected vision is above without astigmatism, myopia is almost 225 to 250

That is to say, you can see with glasses, so to know the vision of the eye, you have to look at the vision of the naked eye!

1. Eyesight. Distance vision is impaired and near vision is normal. Squint at the distant target.

2. Visual fatigue.

Due to the uncoordinated adjustment and collection, I feel that my eyes are sore, and I occasionally have symptoms such as headache and dizziness.

3. Deviation of eye position.

It is usually more common in high myopia, and exotropia or exotropia may occur.

4. Eye changes.

proptosis may occur due to elongation of the eye axis; or retroscleral staphyloma forms posteriorly.

5. Change of the anterior chamber.

The anterior chamber is deepened, the angle is mostly wide, the pupil is usually large, the light response is sluggish, and the corneal ** area is thin.

6. Fundus changes.

Low- to medium-to-mid-myopia generally have no changes, and high-to-moderate myopia can see degenerative changes in the fundus. Including the arc-shaped spots next to the optic disc of myopic eyes, leopard-shaped fundus, macular pigmentation, and atrophic spots; Hemorrhage or formation of neovascular membranes, lattice-like degeneration of the peripheral omentum, cystic degeneration, retinal tears, retinal detachment.

7. Vitreous liquefaction, turbidity and posterior detachment appear "floaters".

8. Other complications such as cataract, glaucoma, amblyopia, etc.

Therefore, it is necessary to pay attention to children's myopia and correct it in time.

1. Scientific control of myopia: once myopia occurs, it is necessary to go to the hospital for optometry, wear glasses with appropriate power to correct myopia, and beware of the rapid growth of myopia. This point is especially important for teenagers, who need to go to the hospital every six months for dilated eye refraction and wear glasses with appropriate power according to the change of myopia, so as to form a clear image and slow down the rapid growth of myopia.

2. Increase the time of outdoor activities: It is recommended to spend no less than two hours outdoors in the sun every day, and it is recommended that teenagers with myopia do outdoor activities for a longer time. Studies have found that natural light can promote the release of dopamine from the retina and delay the progression of myopia.

5. Pay attention to the supplement of eye nutrition: balanced nutrition, no picky eating, no overeating, less sugar, more vegetables and fruits, and drinking no less than 1500 ml of water every day. In addition, it is necessary to supplement the vision nutrients of Leyan in time, and supplement the lutein, anthocyanins and zeaxanthin that the eyes have been consuming, so as to better control or improve the degree of myopia.

If you insist on correcting it in this way, then the myopia of the eyes will naturally improve gradually.

The visual acuity is the visual acuity of the old eye chart, that is, normal vision, as long as the visual acuity is at or above, it is normal vision, and there is no myopia.

Ways to maintain good eyesight are:

1. Reading books, when children are reading and writing, do not lie on the table and tilt their heads to study, let alone lie down or sit in the car to read, and the posture of reading and writing must be correct.

2. When writing and reading, keep the distance between the body and about 30 cm.

3. Don't use your eyes for a long time, especially when using the computer, watching TV, watching and writing, it is best not to exceed 40 minutes in a continuous time, and you should rest for about 10 minutes after using your eyes, do eye exercises, look at the green scenery in the distance, or close your eyes and take a break.

4. The indoor light should be sufficient and soft. If you can't study in strong sunlight, you can choose a non-flickering lamp, such as an incandescent lamp.

The visual acuity is less than 100 degrees, and the logarithmic eye chart is equivalent to the international visual acuity standard, which belongs to the range of normal visual acuity.

The international standard eye chart is based on the word e as the visual standard, the visual standard is arranged in a total of 12 rows, the increment rate of the visual target is the number of harmonic sets, and the visual acuity is the difference series (, recorded as a decimal.

The above is expressed in the form of a logarithmic eye chart, which is also known as a 5-point logarithmic eye chart. It divides visual acuity into 5 levels, with 14 lines of visual acuity marked by E or C. The logarithmic distance vision chart is a test at a distance of 5 meters, and the 11th line can be distinguished, which is the standard visual acuity.

Visual acuity is the standard of normal visual acuity, and visual acuity above is considered normal (inclusive). It is also called marginal vision (like passing a test with just 60 points), which means that you can not wear glasses, or you can say that you do not have myopia.

Visual acuity is normal vision or only mild myopia, and failure to achieve normal vision will cause dry eyes, internal sensation, fatigue, and foreign body perception. Go to the ophthalmology department for refractive examination to determine the accurate prescription, and then wear glasses in time to correct it in time. Usually ensure adequate sleep, do not read in places where the light is too dim, and eat some foods rich in vitamins and proteins.

This is the standard of normal vision, and glasses are not recommended, which means that you can not wear glasses, or you may not be nearsighted.

A, but strictly speaking, it can also be worn at 50 degrees. Whether or not to wear this specific 50 degrees needs to be considered according to the actual situation, if you don't use your eyes too much, there will be no luminosity, and if you want to drive or see far away, you need to wear about 50 degrees.

It refers to the visual acuity that can be seen on the visual acuity table, and the specific degree is the refractive state of the eye that needs to be detected through optometry, and whether the patient is nearsighted, farsighted, or astigmatism, these two are different concepts. How many degrees refers to the refraction power of the eye, while visual acuity refers to the power reflected by the refraction and then the optometric target, and the concept is different between the two. The visual acuity corresponding to the eye chart is the visual acuity, or it is basically a normal visual acuity, which will not be accompanied by a lot of refraction power, and is the visual acuity of the normal eye.

Normal is emmetropia, and bai is the standard.

Du eyesight, below the word is zhi

For those who are nearsighted, it is recommended that DAO usually take care of their eyes, protect their eyesight, and be sure to develop good habits. The easiest and healthiest way is to use physiological routines, such as getting up and moving regularly, looking into the distance, looking at green plants, eye exercises, washing your face with cold water, and then you can usually eat some foods rich in vitamin A, such as sheep liver; Then you can use wolfberry chrysanthemum to soak in water and drink.

Corrected visual acuity is the visual acuity achieved after wearing glasses.

Visual acuity is commonly said, corrected visual acuity is relative to uncorrected visual acuity, uncorrected visual acuity is actual visual acuity, and corrected visual acuity is the visual acuity obtained after correcting refractive error with eye-gaze key wheel lenses. It is also the vision after wearing glasses.

People's normal vision is above and above, so it is normal to say that the vision is so natural!

But you need to be careful!

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 an hour, you should let the child go to outdoor activities, do games, look into the distance, or observe the flowers and 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 light 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 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 the child's eyesight, and the child's sugar intake should be controlled.

5. Pay attention to regular inspections.

Regular check-ups are due to the fact that children's eye structure, binocular visual function, and intelligence are still in the process of continuous development after birth, and the content of the examination 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.

Visual acuity is not proportional to the power and is basically normal vision.