What does amblyopia mean

summary

With the development of electronic products, eye protection has become a very serious problem. Many children will have the problem of amblyopia. Let's share the knowledge about amblyopia.

What does amblyopia mean

First of all, amblyopia mainly refers to functional diseases in which the best corrected visual acuity (BCVA) can not reach the visual acuity value consistent with the development period without obvious organic lesions in eyeball and visual pathway. For example: the normal visual acuity is about 0.5 at the age of 2, about 0.8 at the age of 4, and > 1.0 at the age of 5. The visual acuity of each age group is different.

Then, amblyopia is a symptom of impaired visual function development, just like when the child's head is pressed with a heavy big barbell, the weight of the barbell is greater than the weight that the child can bear: (1) first, the weight of the big barbell inhibits the child's normal visual function development, leading to low corrected vision; (2) second, the visual function development is inhibited, and at the same time, it leads to eyeballs There are many kinds of amblyopia, such as strabismus amblyopia, ametropic amblyopia and so on.

Finally, for the formation of amblyopia, the theory of "centrogenesis" is widely supported. Wiesel, Hubel et al. Observed the amblyopia cat model by visual evoked potential, and found that the location of amblyopia lesions was located in the visual center of the brain. The damage of the visual center of the brain inhibits the normal development of visual function, which will cause the appearance of weakness, and the child's eyes have to wear glasses to correct.

matters needing attention

In life, for those preschool children, we should pay attention to the frequency of eye use, let the baby often go out activities, don't always stay at home watching TV and playing mobile phones, often take the children out to relax, but also pay attention to keep a good sitting posture when learning.