What is the degree of vision 4 5? What is the degree of myopia 4 5 in the eye

Visual acuity is about 300-350 degrees Celsius.

The conversion of the eye chart to the decimal eye chart is ,,,defined by the diopter, and the myopia degree d=100 (decimal eye chart f), according to the formula, the visual acuity can be calculated to be about myopia degree = 100.

Because of the relationship between visual acuity and diopter (myopia), in fact, these two concepts are independent of each other, and there is no absolutely accurate conversion relationship between them, so the visual acuity is about 300-350 degrees of myopia, which is moderate myopia.

We can't directly infer what the power is from the naked eye, they are not proportional. For example, one has myopic eye unaided vision but one has myopia, so it must go through refraction to get his power, otherwise our refraction will have no meaning.

If it is simple myopia, it is probably between 120 and 150. If there is a flash or a mixture of flashes, it varies from person to person.

Simple vision can not judge what the refraction is, because each person's sensitivity to external objects is different, the specific through refraction can be determined, generally speaking, if simple myopia, there should be 200 degrees, but not sure. There are many reasons for poor eyesight, and it should be necessary to check this vision.

I'm short-sighted....The above is normal, it seems to be....

If you can't judge the prescription according to your eyesight, you can go to the relevant vision institution to know the prescription.

You also. Visual acuity refers to the visual acuity that can be seen by the glasses, and does not represent the power, which is used to correct the refractive error of the glasses! No one's adjustment is different, some use 50 degrees to correct it, and some use 300 degrees to correct this method.

Don't look at the computer and TV and other monitors when you have nothing to do, don't lie down and read a book, read in direct sunlight, don't do a car, read a book while eating, play with your mobile phone, etc., and do eye exercises often ......You are pseudomyopia, the main protection will definitely be able to get better on your own Generally pseudomyopia, I also had this situation when I was in junior high school. After my dad found out, he bought me eye drops, drops before going to bed, and pay attention to eye hygiene, not to overuse eyes, pay attention to rest, and eat more carrots, which are all helpful. If you have myopia, you can't restore your original vision unless you go for an excimer laser, and you can only delay the deepening of your eyes by taking care of your eyes.

To effectively maintain your eyes, you can refer to the following two points:

1) Among the key points of vision care, the main thing is to "don't look at it for a long time" - watching TV, playing on the computer, etc., because there is radiation, so the time should not be too long. In addition, overuse of the eyes can cause eye fatigue and cause the refractive power of myopia patients to deepen. You can usually do more eye movements, such as:

Rotate up and down, looking left and right, to relax the eye muscles. Warm compresses are also effective and quickly eliminate eye fatigue. You can also rub the palms of both hands until hot, and then apply it to the eye area to promote blood circulation in the eye area.

2) In terms of diet, food supplements can be appropriately carried out: meat of pigs, cattle, sheep, chickens and other animals; sea cucumbers, yellow croaker, eels and other fish; pig liver, chicken liver and other animal livers; Others such as longan, lychee, carrot, celery, yam, sesame, wolfberry, chrysanthemum, cassia and so on. And eat less spicy foods such as onions, garlic, leeks, pepper, wine, and chili peppers.

As for surgery, LASIK is currently the mainstream surgery for refractive problems in China. It has relatively strict indications and contraindications, and surgery is generally not considered under 18 years old, and some doctors extend the scale to 20 years old.

LASIK is favored by doctors because of its light response after surgery, fast vision recovery (you can use your eyes immediately after surgery and return to normal vision after a few hours), and stable results, fast and convenient (you can move normally on the same day after surgery, without affecting your life and work).

However, as long as it is an operation, no matter how big or small, there is a certain risk, and theoretically the infection caused by improper treatment can seriously affect vision, but we have never seen a similar example in our hospital so far. In addition, irregular astigmatism and night glare may be common after surgery. Generally, those who are at least 18 years old, have myopia within 1500 degrees, farsightedness within 600 degrees, astigmatism within 600 degrees, and have stable myopia in the past two years, and have no eye lesions at this stage can consider surgery.

This is not necessarily, because everyone's adjustment power is different, and the relationship between naked eye vision and myopia is not particularly large, but the visual acuity is about 200 degrees.