What symptom is 400 degrees myopia?

summary

People have always believed that vision loss is "quietly" coming, until the discovery of blurred vision, then the boat is done. Actually, before eyesight drops, the happening of myopia is to have augury, have signal, what symptom is 400 degree myopia? Let's talk about it

What symptom is 400 degrees myopia?

The most prominent symptom of myopia is the decrease of far vision, but the near vision can be normal. Although the higher the degree of myopia, the worse the distant vision, but there is no strict proportion. Generally speaking, for myopia above 300 degrees, the far vision will not exceed 0.1; 2-0.3 for 200 degrees; 1.00d can reach 0.5, sometimes better.

Especially in the low-grade patients, but not as obvious as hyperopia. It is due to the disharmony between regulation and collection. In high myopia, because the fixation target is too close to the eye, the collective effect can not cooperate with it, so monocular fixation is often used, which will not cause visual fatigue.

Because myopic eyes do not need to adjust the nearsightedness, so the collection function is relatively weakened. When the muscle balance cannot be maintained, the binocular visual function will be destroyed. Only one eye can see the object, and the other eye leans to the outside, which becomes temporary alternating strabismus. If the visual function of the deviated eye is very poor and the deviation occurs earlier, it can make the deviated eye lose the ability of fixation and become monocular exotropia.

matters needing attention

The occurrence of myopia has a certain regularity, we should pay attention to the visual care in the predilection period, usually including preschool, growth and development period, pregnancy, perinatal period and suffering from some systemic diseases. Simple myopia has a clear external cause, that is, long-term close eye use, so reducing the visual load is the key to prevention.