How many degrees or more is true myopia?

First of all, it is necessary to make it clear that there are not many degrees above true myopia, saying that you see distant objects with blurred vision, and it is not necessarily true myopia, it may also be a long-term high-intensity overwork or study, which causes short-term adjustment abnormal tension or spasmodic state, and then returns to normal after a period of time, which is what we often call "pseudomyopia", pseudomyopia also has a more significant feature is that the naked eye situation is good and bad, and you may not be able to see clearly when you study at night. Then get up in the morning and your vision is very goodOf course, if you have difficulty feeling this clearly, it is recommended that you go to the eye hospital after the atropine point is paralyzed and the ciliary muscle is observed.

If the vision does not deteriorate but improves, then do not go for glasses, of course, there is a doctor who recommends that you try not to wear glasses above short-term vision, because there is also the possibility of pseudomyopia. Of course, this should be analyzed on a case-by-case basis, rather than a uniform rule.

The term pseudomyopia itself is not rigorous, giving people the illusion that myopia may "disappear suddenly", or to some extent, "it is not myopia, it may disappear". Due to the imperfect adjustment function and inaccurate adjustment, the myopia can be eliminated by dilating the pupil to remove spasticity, which is what the public understands as "pseudomyopia". In fact, with the development of age, the ocular accommodative function is stable, for example, after the age of 15, there is almost no myopia caused by spasticity, and there is no obvious effect on pupil dilation, and the cause of myopia is the elongation of the eye axis.

There is nothing to "remove" the factor. Myopia is myopia. After the age of 15, no matter how many degrees, don't worry about any "pseudomyopia".

Glasses should be fitted, as many degrees as you want, keep wearing them, otherwise it will be worse.

True myopia, also known as axial myopia, is caused by congenital or acquired factors (such as not paying attention to eye hygiene), which makes the anterior and posterior diameter of the eye (i.e., the eye axis) longer than the normal average of 24mm, resulting in the focus of parallel light rays in front of the retina after the eyeball is incident and the image cannot be clear. The main clinical characteristics are: most of them are moderate and high myopia, which occurs and develops for a long time, and the appearance of the patient's eye is protruding to varying degrees.

I have seen 600 degrees of pseudomyopia, 100 degrees of true myopia, 100 degrees of vision, and 400 degrees of vision (naked eye), so if the subject has relevant confusion, go to the hospital to dilate the pupils, and then check the eye axis and curvature if the conditions permit, and comprehensively analyze your situation. <>

Both true and pseudomyopia manifest as decreased distance vision and good near vision. Pseudomyopia is functional, more common in adolescents, and can be restored to some extent with appropriate rest. True nearsightedness is an organic change that cannot be recovered spontaneously. Identification method:

1.Ciliary paralysis method.

Use cycloplegic drugs to relax and adjust, relax the ciliary muscles, make the eyes in a static refractive state, and then check the visual acuity and refraction to determine. If the visual acuity does not change after mydriasis, it is true myopia, and the visual acuity increases as pseudomyopia; Refraction with myopia is true, and no myopia is false. This is recognized as the most reliable method for differential diagnosis.

2.Cloud method.

Let the patient wear + spherical lens in both eyes at the same time, see the distant object for 3 minutes, and then remove the right lens, and immediately check the naked eye vision. This method is not very exact.

3.Dynamic imaging method.

Instead of dilating pupils, check the distance and near unaided visual acuity of both eyes. Poor distance visual acuity, normal near visual acuity, and no other eye diseases that affect visual acuity are differentiated. Darkroom inspection.

The patient wears an audition frame, and the left and right eyes are placed + spherical lenses. The patient's eyes are fixed on the optoscopic scope with both eyes at the same time (the No. 5 character or the word with few strokes such as large, small, upper and lower strokes is pasted on the side of the mirror, and illuminated with slit light next to the ophthalmoscope); 33cm distance isotope dynamic imaging.

Results: Those with reverse movements in all radial directions of the affected eye are true myopia. Each radial direction is forward or immobile, or one radial is forward and the other radial is orthopedic or farsighted.

Because of its manifestation of myopia, it is pseudomyopia; One radial direction is inverse, and the other radial direction is forward or immobile is mixed astigmatism. <>

The difference between true myopia and pseudomyopia is not in the degree, as long as you dilate your pupil examination, there is 1 degree of true myopia, if it is false, there will be no degree of dilatation after the manifestation of the degree.

As long as you wear glasses, you are really short-sighted!

I can wear 400-degree glasses, but I'm not nearsighted.

I'm not myopic, since last year, my eyes have become more and more blurry, at the beginning of the distance will be refractive, slowly astigmatism, now even 3 meters away people can't see clearly, blurry, home TV 2 meters distance are dazzling, very hard to see.

If you have trouble reading the eye chart with one eye, you will need to wear glasses.

Medical studies have shown that after dilating the pupils and eliminating visual fatigue, if there is a degree of myopia in the eyes, then it is true myopia.

Some people may only have 25 degrees of myopia, but they are truly myopia; There are also people who have 200 degrees of myopia, but they are still pseudomyopia. The distinction between true and false myopia is not based on the degree, but on the degree of visual fatigue of the eyes, and the more severe the visual fatigue, the more likely it is true myopia.

Common methods to improve vision in true myopia are:

1. Correct bad eye habits.

1. Avoid continuous operation of the computer and reading and learning for a long time, do not wait until you feel tired to rest, but should rest for 10-15 minutes every hour or so, or look at the green trees or vistas outside the window, or do eye exercises, so that the eyes are fully relaxed.

2. Maintain a good working posture when operating the computer and reading and studying. Maintaining an optimal posture with both eyes at eye level or slightly looking down at the phosphor screen will relax the neck muscles and minimize the area of the eyeballs exposed to air. Don't read while lying down, or in poorly lit areas, or on moving objects (such as vehicles).

It is advisable to use fluorescent lamps for reading books.

3. If the eyes are dry, red, burning or foreign body, the eyelids are heavy, the vision is blurry, and even the eyeballs are swollen or headache, you should immediately stop operating the computer and reading and studying, and rest for a period of time.

2. Adjust your diet.

Studies have found that increasing protein and decreasing carbohydrates** in the diet can reduce or stop the increase in myopia in adolescents with a genetic background who develop myopia. Therefore, to avoid the occurrence of myopia, eat less sweets and high-sugar foods. Too much sugar will produce a large amount of acidic substances in the blood, and the acid will combine with the salt in the body, especially calcium, resulting in 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.

On the surface, people with myopia can supplement protein, calcium, phosphorus, carrots, bean sprouts, oranges, mandarins, red dates and other vegetables and fruits are also beneficial to myopia.

3. Take drugs to improve vision in a timely manner.

It is mainly for children under the age of 18, because they are in the period of vision development, and the adjustment of the eyes is strong. Generally, doctors often recommend taking Joyeye Vision Nutrients, taking it with warm water, and insisting on taking it for a period of time, which can quickly reduce the degree of myopia and achieve the purpose of controlling or improving vision.

If the child's prescription is less than 100 degrees, the child may be considered pseudomyopia.

There is not a difference in the degree of myopia, but a difference in the cause of myopia and true myopia. True myopia is an eye disease caused by a change in the structure of the eyeball, and the eyeball grows too long and too fast, causing the focal length to fall in front of the retina.

Although pseudomyopia is also manifested as myopia, and the focal length of light falls in front of the retina, the cause of its formation is not the structural change of the eyeball, but the change of the lens refractive power caused by the spasm of the ciliary muscle in the eye due to long-term fatigue contraction. Therefore, pseudomyopia can be completely recovered by **, while true myopia is a structural change.