What can’t high myopia do?

Abstract: myopia is affected by heredity and environment, and genetic factors play a great role in high myopia, especially in fundus lesions of high myopia. However, myopia is not a simple genetic disease, it is affected by a variety of genes.

nowadays, there are more and more people with myopia, and many of them have high degrees.

some patients are worried after hearing some rumors of high myopia:

can I play?

can I donate blood?

can I give birth naturally?

some people are so worried about it that it affects their normal life and even important medical decisions; But some patients do not care, so that they miss the best opportunity to see a doctor.

high myopia ≠ high myopia fundus disease

myopia has a common classification standard: if the degree is greater than 600 degrees, it can be called high myopia.


but this standard is relatively simple and rough. It does not take into account the influence of astigmatism and the presence or absence of fundus lesions.

most people’s myopia belongs to axial myopia: the anterior and posterior diameter of their eyeballs becomes longer, just like a table tennis ball pulled into the shape of an egg.

this leads to the fact that light cannot accurately gather on the retina of the fundus of the eye, resulting in the unclear visual signal received by the retina, that is, you can’t see clearly.

usually, the higher the degree of myopia, the longer the eyeball is “pulled”, and the greater the possibility of fundus lesions. However, there are still great individual differences:

some people have obvious fundus lesions before their myopia reaches 600 degrees.

a few people have high myopia, but the fundus examination is normal.

600 degrees is not a “watershed”, Doctors are mainly concerned about the fundus.

myopia is affected by both heredity and environment, and genetic factors play a great role in high myopia, especially in high myopia fundus lesions. However, myopia is not a simple genetic disease, it is affected by a variety of genes.


therefore, the next generation who is not highly myopic must also be highly myopic and may be completely normal.

high myopia try not to exercise violently. Patients with

high myopia need to avoid strenuous exercise, especially activities with direct impact or obvious concussion on the eyes and head.

such as diving, bungee jumping, boxing, high jump and some violent shaking games in amusement parks.

basketball, football, badminton, etc. can be carried out, but we must protect our eyes from trauma.

high myopia can donate blood? Can you give birth naturally?


did not find sufficient reasons why patients with high myopia could not donate blood or give birth naturally.

if these activities cause eye problems, the main factor may be that the patient has developed fundus lesions, which is more prone to retinal detachment.


therefore, we should not only pay attention to the degree. It is best to see an ophthalmologist first to see if there are fundus lesions.


if they are worried about risks but do not take the initiative to see a doctor, they have to wait until there are problems before they blame “having children”, which is really wrong.

people with high myopia are more likely to develop fundus retinopathy.

although there is no sufficient evidence that high myopia cannot donate blood or give birth naturally, people with high myopia are more likely to develop fundus retinopathy.

because the eyeball is “elongated”, all layers of tissue in the eyeball wall will become thinner and shrink accordingly. Especially after the retina becomes thinner, it is easy to cause degenerative zones and holes around the retina, which will further lead to retinal detachment; The macular region in the center of the retina may also have various pathological changes such as holes or bleeding, which will seriously affect vision.

these lesions can cause blindness. Some can be prevented and treated by laser or surgery in time, while others do not have good treatment. Their eyesight may become very poor, and wearing glasses does not work.

in addition, in addition to fundus retinopathy, people with high myopia are also prone to lens dislocation, cataract, open-angle glaucoma and other problems. How can


prevent the complications of high myopia?

for patients with high myopia, the most important thing is:

regular ophthalmic examination. It is generally recommended to check every six months.


are checked regularly, focusing on the fundus. After dilating the pupils with medicine, thoroughly check the retina all week. If problems in the retina, such as thinning, degeneration or holes, can be found in time and prevented by fundus laser photocoagulation, the possibility of retinal detachment in the future will be greatly reduced.


should be reminded that if pupil dilation is performed, do not drive on the same day. It is best to be accompanied by relatives. Things may be slightly blurred for a few hours.


high myopia can only be regarded as “mending the lost sheep” no matter how to correct and treat it, because there is no way to retract the elongated eyeball.

therefore, the best way to prevent it is to develop good eye habits from childhood, exercise more outdoors and try to avoid entering the ranks of “high myopia”.