Experts explained, “the normal eye axis is about 24 mm, and each millimeter of myopia increases by about 300 degrees, which is why myopia is prone to retinal detachment, and the risk of high myopia is higher.”In people with fundus diseases, the retina itself is not firm and easy to fall off. “So we should remind the myopic patients whose myopia degree is more than 300 degrees to avoid strenuous exercise as much as possible in order to protect their retina.
Avoid strenuous exercise in high myopia
Doctors especially remind that the risk of retinal detachment in high myopia is 30 times higher than that in normal vision.
For people with high myopia, some intense sports, such as roller coaster, bungee jumping, diving and so on, may cause retinal detachment.
Retinal detachment ≠ invisible
“There is a misunderstanding here. It is generally believed that retina detachment means that it is invisible. In fact, it is not.” “If the retina falls off seriously, it will be invisible (falling off to the macula of the retina), and if it falls off slightly, it will not affect the vision,” the ophthalmologist said.
Three causes of retinal detachment
- Overwork. There are ten layers of human retina, and there are gaps between them. Force is too big, eyeball has vibration, omental fluid is easy to enter crevice to separate two layers, generally speaking, two or three layers are easy to fall off.
- Chronic malnutrition. Malnutrition can lead to ischemia of the eye and also to detachment of the retina.
- High myopia. Because the axis of the eye will be elongated after myopia, it is easy to lead to primary retinal detachment.
What are the signs of retinal detachment?
“If the retina is slightly detached, if you don’t pay attention to maintenance, it will gradually aggravate, and it will be very serious when the retina is detached to the macula.” Doctors remind that there is usually an omen before the retina falls off. The patient’s field of vision may appear cloud like shadow, or expanding black shadow, or a certain direction of continuous flash. It is better to seek medical diagnosis in time when this symptom occurs.