Abstract: the ocular axis of high myopia increases, and the sclera of the outer wall of the eye expands continuously. After the retina develops and matures, its area is fixed. With the expansion of the sclera, the retina will be pulled thinner and thinner and easier to tear.
in everyone’s concept, high myopia generally refers to myopia above 600 degrees, but if it is a teenager, especially a teenager under the age of 12, we will regard it as high myopia above 300 degrees!!!
and the difference between high myopia and low myopia is not just a “degree” difference! Take a simple example: we often say that high myopia can’t do strenuous exercise, but low myopia doesn’t matter. This is a big difference.
we can easily see that the axis of the eye of high myopia is extremely elongated, and the eye becomes an over inflated balloon. The higher the degree of myopia, the greater the potential safety hazard.
so what are the hidden dangers of high myopia?
1. Retinal detachment
the ocular axis of high myopia increases, and the sclera of the outer wall of the eyeball expands continuously. After the retina develops and matures, its area is fixed. With the expansion of the sclera, the retina will be pulled thinner and thinner and easier to tear.
retinal detachment usually leads to narrowing and deformation of visual field:
2 Posterior scleral staphyloma
myopia deepens continuously, and the eyeball expands behind the eyeball like grapes. The higher the degree of myopia, the higher the incidence. It is usually accompanied by vision loss, and in severe cases, vision loss.
3. The symptoms of
often feel that there is a dark shadow floating in front of you, which is more obvious in the case of strong light.
4. High myopia posterior pole disease
are a group of diseases that seriously endanger vision. They include anterior macular membrane, macular retinal split, macular lamellar hole, subretinal hemorrhage and so on.
this is not intended to create fear, and it is not necessarily that every high myopia will occur. It is just that there may be such a hidden danger in high myopia, and it does happen, especially the disease of flying mosquito is quite common.