What is simple myopia and progressive myopia?

summary

In recent years, China's myopia rate has increased, myopia can be seen everywhere, but many myopia patients do not have a comprehensive understanding of myopia, let's take a look at the following two professional words about myopia: simple myopia and progressive myopia.

What is simple myopia and progressive myopia?

Simple myopia: it is a school-age onset, myopia degree below 600 degrees, fundus generally no obvious change, with appropriate lenses can be corrected to normal vision, generally in the body after maturity (after 20 years old) degree tends to be stable myopia. Simple myopia is mainly seen in teenagers and children, and its basic characteristics are that it occurs and develops during the growth and development of teenagers; It gradually deepens and becomes stable in adulthood. The whole process is irreversible unless effective corrective measures are taken; The distance vision is low and the near vision and other visual functions are normal; The low vision can be corrected perfectly; Myopic refraction is low or moderate; Pathological myopia is usually not developed.

Progressive myopia: in general, simple myopia will not develop at the age of 20, but there are also a few myopes that continue to develop, especially in adulthood, the myopia continues to increase, the axial length continues to extend, and the diopter increases year by year, even more than 20.00d. This kind of myopia is called progressive myopia or malignant myopia, degenerative myopia. Progressive myopia is beyond the category of ametropia to a certain extent, and will eventually lead to a series of pathological changes of the whole eyeball. Such as early degenerative changes, so that vision loss, mild degenerative changes in the vitreous.

Myopia is a kind of refractive state in which the focus falls in front of the retina after the parallel light is refracted through the refractive system of the eye without adjustment. So myopia can't see the distant target. If the target is gradually moved closer to the eye and the light is scattered to a certain extent, the focus will move backward when the target is moved closer to a certain point in front of the eye. The closer the point is to the eye, the deeper the degree of myopia.

matters needing attention

Myopia patients should wear appropriate glasses, and pay attention to eye hygiene, do not fatigue with eyes, do not have nothing to look at the computer, TV and other monitors; Don't read in direct sunlight or lying down; Don't make cars, read books and play mobile phones while eating, and often do eye exercises.