Abstract: myopia is divided into axial myopia and curvature myopia. Most of the clinical myopia is axial myopia. The normal eye axis is 24mm and 28 ~ 30mm. The eye axis of high myopia will be longer., Ms. Ning has more than 700 degrees of myopia, which belongs to high myopia. Recently, what make complaints about her eyesight is that she has been catching up with her mobile phone. She is not clear about what she is seeing. She feels like she is going to be blind. Frightened, she immediately stopped the fun of the screen, went to bed on time and refused to be a “claw machine party”. Fortunately, after a period of recuperation, her eyes felt much better., Experts remind that if people with high myopia do not pay attention to using their eyes, it may lead to the outbreak of complications such as fundus hemorrhage, retinal detachment and glaucoma. It’s hard to say whether you will be blind., Why do adults still have myopia? The ocular axis will change. After the age of 18, the development of the ocular axis is basically stable. With the increase of age and improper eye habits, there will be certain degenerative diseases. Most people will have presbyopia and cataract in the middle-aged and elderly, and a few people will have low myopia in adulthood because of their living and working habits., However, for people with high myopia, their eyesight is always changing, and even lead to complications and even irreversible consequences due to improper use of eyes., Compared with ultra-high myopia of more than 900 degrees, the development of ocular axis of high myopia is relatively fixed, but if the eye is not used properly, the degree will still deepen in stages., Because ultra-high myopia is pathological myopia, the ocular axis will continue to change, which is mainly caused by fundus changes.,
Ms. Ning has myopia of more than 700 degrees, which belongs to high myopia. Recently, what make complaints about her eyesight is that she has been catching up with her mobile phone. She is not clear about what she is seeing. She feels like she is going to be blind. Frightened, she immediately stopped the fun of the screen, went to bed on time and refused to be a “claw machine party”. Fortunately, after a period of recuperation, her eyes felt much better.
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experts remind that if people with high myopia do not pay attention to using their eyes, it may lead to the outbreak of complications such as fundus hemorrhage, retinal detachment and glaucoma. It’s hard to say whether you will be blind.
why do adults still have myopia? The ocular axis changes
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. After the age of 18, the development of the ocular axis is basically stable. With the increase of age and improper eye habits, there will be certain degenerative diseases. Most people will have presbyopia and cataract in the middle-aged and elderly, and a few people will have low myopia in adulthood because of their living and working habits.
but for people with high myopia, their eyesight is always changing, and even lead to complications and even irreversible consequences due to improper use of eyes.
relative to the ultra-high myopia of more than 900 degrees, the development of ocular axis of high myopia is relatively fixed, but if the eyes are not used properly, the degree will still deepen in stages.
and ultra-high myopia is pathological myopia, so the ocular axis will continue to change, which is mainly caused by fundus changes.
what is high myopia? 600 degrees is the assessment line
“my eyes have just reached 600 degrees, they are highly myopic? It’s too exaggerated. Why isn’t 500 degrees? How much difference can it be?” Many people question the value of measuring high myopia, and some people think that high myopia is only when it is above 800 degrees. Liu Jianguo, chief ophthalmologist of Xi’an fourth hospital, said that if you are short-sighted, for every 100 degrees difference in your eyesight, the most direct manifestation is the eyesight chart. You may read two lines less than others.
in medicine, myopia is divided by degree, Ametropia with a degree greater than 600 degrees (children > 400 degrees) is called high myopia, because this kind of myopia often has ocular pathological changes; ultra-high myopia with a degree greater than 900 degrees is also called pathological myopia. The cause of high myopia is not known, and the occurrence of pathological myopia is closely related to heredity. The acquired environment plays an important role in the pathogenesis of myopia.
Why is the degree of myopia different?
myopia can be divided into axial myopia and curvature myopia. Most of the clinical myopia is axial myopia. The normal eye axis is 24mm and 28 ~ 30mm. The eye axis of high myopia will be longer.
curvature myopia is myopia caused by the increase of the curvature of the cornea or lens. For example, diabetic patients will suffer from myopia due to fluctuations in blood glucose level. Another example is that pregnant women will change their whole body water balance due to hormone changes during pregnancy, resulting in high water content of lens and myopia. Most of them will change after production.
laser correction treatment schemes vary from person to person.
laser excimer correction of vision is a well-known way. First of all, you must know that laser correction of vision is not once and for all. Even if your vision is restored, you need to take care of your eyes, otherwise you will “return to the original shape”.
people with high myopia are more suitable for femtosecond laser surgery, and should be carried out under the condition of individualized setting. Because the cornea of patients with high myopia will be hit much and deeply by the laser during treatment, the night vision of patients will be affected when the pupil is enlarged at night, especially the larger the pupil, the greater the degree of influence. Therefore, it is necessary to individually design corneal radian and curvature to reduce the complications of night vision in patients with high myopia.