|
We have stressed that we need to protect the children's vision repeatedly, and the main measures is to improve the lighting of classrooms and libraries. Parents buy the best table lamp for children, but also to improve nutrition. The fact is that myopia is more and more. Let us take a look at why people have myopia. When we look at the near things, if we do not do an adjustment, imaging will back of the retina, of course, we do not know. At this time, we could increase the refraction of the lens increase through contraction of the ciliary muscle, which allows imaging an object on the retina, and then you can see. However, for a long time to see near objects, the ciliary muscle contraction frequently without a rest, it will lead to the anteroposterior diameter of the eye gradually became longer. It is unlikely to need to contract ciliary muscle, and the object can be imaged on the retina, so that people see close objects easily. However, the axis oculi stretched when people see distant objects, imaging is in front of the retina, the eye muscle cannot be adjusted, can only wear glasses to correct the refractive error of the eye, so that distant objects can be imaged on the retina. Thus, the nature of myopia is an adaptive response of the axial length of the long-term as near objects. This elongation general cannot be reversed, or that there is no reversal of the conditions, such as people cannot close for long periods of time in learning and work. Why people are not easy to get myopia under the dim light? There is a phenomenon which was called night myopia. People could see the items at day, but at night they should wear myopia. The reason is maybe the difference in refractive night, which the imaging migraine is in the front. First of all, home lighting should not be too bright. Words of children's books should be big, so it is easy to see them clearly. In addition, after a period of study at night, you should play outside for a while. Sara began to play online games last month. She finds it more interesting than shopping. Now she often buys gold from Sell gw2 gold and Guild Wars 2 Gold.
Related Articles -
Myopia, protection, eye,
|
