In recent years, more and more people have undergone myopia surgery.
Especially during the summer vacation, myopia surgery is also at its peak.
According to the “White Paper on Myopia Surgery for Chinese”: The incidence of myopia in China is 48.5%, ranking first in Asia, and the number of myopia patients has exceeded 600 million.
In contrast, the growth of myopia surgery has also increased. Comparing 2018 and 2020, in just 2 years, the number of myopia surgeries in China has increased by nearly 75%.
There are naturally many reasons for myopia surgery.
Some people want to get rid of the troubles caused by wearing glasses, some people have vision requirements because of the volunteers and majors they want to apply for, and some people have myopia surgery as their own ” Coming of Age”.
But then again, can myopia surgery really cure myopia?
Most people are nearsighted, mainly because their eyeballs are too long
Myopia is a refractive error, a condition in which the retina cannot form a sharp image when parallel light enters the eye and focuses in front of the retina.
The axial length of the eye is too long and cannot be retracted any more, so myopia is caused, which is also called “axial myopia”. Only a small part of myopia is caused by the excessive curvature of the cornea and lens, which leads to “curvature myopia”.
And the eyeball is too long, it will increase related eye diseases, and even some eye diseases that are still complacent and poorly treated, and the older the age, the higher the risk.
(the principle of myopia)
Unfortunately, current myopia correction surgery does not change the length of the ball.
No matter what kind of myopia correction surgery, it is impossible to move the knife on the size of the eyeball. Naturally, it cannot change the fact that the eyeball of a myopic person is long, let alone suffering from myopia-related diseases. risks of.
And if you have curvature myopia, although the eyeball does not grow longer, surgery only changes the structure of the cornea or lens itself.
Therefore, these myopia surgeries are not so-called cures, but more like wearing glasses, just “correction”.
Can myopia go back after myopia surgery?
Myopia surgery refers to myopia correction surgery, mainly including intraocular lens implantation and corneal refractive surgery.
These two surgical methods can effectively reduce the degree of myopia, or play a role in curing myopia. Many people with myopia will see a very good improvement in their myopia after undergoing surgical treatment.
There are still some patients who have other problems after myopia surgery. Such as dry eye syndrome, or complicated by more serious keratitis.
There are also patients with vision regression, which refers to the phenomenon that the patient’s vision returns to its original state after surgery.
Which people with myopia are not candidates for surgery?
Myopia surgery is not 100% safe as a surgery, and there are also many contraindications and associated risks.
Myopia correction surgery is not recommended for these individuals:
One. Minors
Surgery for nearsightedness must not be performed on people under the age of 18.
Myopia surgery generally adopts the femtosecond laser method, which belongs to an infrared laser and has the characteristics of blasting cutting. For minors, the eyeballs are not fully developed,
If treated in this way, there is a high risk of damage to the cornea. Not only does it not work, but it can also cause permanent damage to your vision.
Second, people with severe myopia
For adults, if the degree of myopia is not very serious, for example, the degree of myopia should be kept within 1000 degrees.
At the same time, the astigmatism is kept within 4000 degrees, then myopia surgery can be accepted, but if the degree is very serious and the degree is unstable, myopia surgery cannot be easily performed.
Crowds whose degree has deepened by more than 50 degrees in three or two years
Even if the degree of myopia does not reach 1000 degrees, if the degree of myopia deepens by more than 50 degrees within two years, this group of people is not suitable for surgery.
This situation shows that the myopia of this group of people is still developing and not in a stable period. Even if surgery is performed, the phenomenon of vision regression will still occur.
Of course, considering that each person’s situation is different, whether it can be done or not, and which is suitable for it, depends on the pre-surgery examination and the doctor’s judgment.
At the same time, even if surgery is performed, the effect varies from person to person. Improper post-operative care, poor eye habits, etc., will also affect the follow-up effect.
References:
[1] “The World’s First Myopia Surgery Big Data Release”, People’s Daily Online;
【2】Tao Tingting. Summer vacation college students Zha Tui for myopia correction surgery [N]. Shanghai Science and Technology News, 2021-07-09(008).
【3】Ren Xuan. Myopia surgery ushered in a peak, what should I pay attention to before and after surgery? [N]. Health Times, 2021-07-06(002).