Myopia does not wear glasses but is beneficial to control degree?
The Internet is full of all kinds of "glasses can not be taken off", "the more I wear the myopia degree is higher", "can not wear glasses as much as possible", there are many parents will believe it, even if the child's true myopia two or three hundred also do not give the child a mirror.
This practice is totally undesirable and undesirable. The American Academy of Ophthalmology has also publicly acknowledged that these are several errors of vision, and there is no need to worry that wearing glasses will cause myopia to deepen.
In a 1983 Finnish experiment, nearsighted children were randomly divided into different groups, some reading without glasses, some wearing glasses all the time. The results showed that the children all had increased myopia, and the severity of myopia changed more quickly in the children who did not wear glasses than in the children who did wear glasses. After three years all the children were advised to wear glasses.
If your eyes have true myopia, but do not wear myopia glasses, when you see the object, the lens will be over-adjusted and convex, supplemented by the increase of the convergence function of the eye, and even the use of the external eye muscle combined with squinting and other actions, which can easily lead to eye fatigue, but will promote the deepening of myopia. After the normal wearing of myopia glasses, the phenomenon of visual fatigue will be greatly reduced, as confirmed by the Finnish experiment, wearing glasses has an inhibitory effect on the increase of myopia.
After wearing myopia glasses, the degree rises "what is the reason?
1, with glasses hastily done, not after mydilation to eliminate false myopia, direct optometry with glasses, degree growth and fast, false true myopia!
2, still do not pay attention to the use of eyes after glasses, long-term electronic products caused by excessive use of close reading, eye fatigue with excessive eye, adjustment spasm and external muscle action on the eye wall, so that the eye axis becomes longer, resulting in myopia will gradually deepen, not because of the deepening of myopia after wearing glasses, wearing or not wearing these factors will affect the degree of deepening.
Therefore, it is recommended to wear myopic glasses after true myopia, myopic glasses are concave lenses, when the myopic glasses are corrected, the focus is just on the retina when looking at the distance, and when you are with low 50, wearing myopic glasses to see the distance, the focus may move forward a little, forming myopic defocus, to delay the development of degree.
It has been found in animal experiments or human clinical experiments that myopia defocus this phenomenon will stimulate the choroid thickening, so that the eye axis is slightly shortened, but the choroid cannot be infinitely thickened, and can only be thickened up to 450 microns. Therefore, it is possible to reduce the degree of myopia by means of choroidal thickening, but it cannot reduce the degree of myopia indefinitely.
The myopia defocus phenomenon that can be formed by proper undercorrection of myopic glasses can inhibit the growth of the eye axis. But if you're myopic and you don't wear glasses, that blur is like form deprivation, and form deprivation is a way to induce myopia in animals quickly. There was an experiment in Japan, where a group of experimental myopic people wore insufficient myopic glasses to see a clear picture on the computer, and another group of people with normal vision saw a blurred computer picture, and the result was that after a period of time, the eyes were myopic one after another.
In short, true myopia after wearing glasses correction is a scientific and correct method, do not believe the network said that "the more the myopia degree is higher, the more can not be picked off." Close reading, you can try to remove myopia glasses or wear reading and writing glasses, reduce the ciliary muscle adjustment ability, the eyes will be more comfortable.
However, if the child is myopic, only wearing glasses for refractive correction is far from enough, and multiple measures should be taken to jointly prevent and control the eye axis, and the degree of myopia is not easy to deepen!
