Because of these concerns, some parents have long known that their children are nearsighted, but refuse to get kids eyeglasses online. Indeed, myopic children do not want to take off their glasses after they are fitted. The reason is that the visual quality is significantly improved after wearing a mirror. Just imagine, compared with the clear world behind the mirror, who would like to take off the glasses and return to the original fuzzy world?

In addition, there was no association between increased myopia and wearing glasses. The child is in a state of growth and development, physiological development will make the eye axis continue to grow, coupled with close eye time is too long, and incorrect eye habits, even if the child does not wear glasses, the degree of myopia will continue to increase. For example, in the children's refractive follow-up files, the myopia degree of myopia in children without glasses increased year by year, increasing between 100-150 degrees per year. So, the idea that glasses lead to increased myopia is not true.

It can be seen that once a child is diagnosed with true myopia, there is no need to refuse glasses. Sometimes glasses can not only improve the quality of vision, but also help the eyes to maintain a relatively perfect visual function.

Consider these two scenarios:

1. Intermittent exotropia. In order to see a close object, the eye needs the internal muscle to work and refocus the image on the retina, a process called adjustment. At the same time, the eyes must also turn inward, facing the object, a phenomenon called convergence. Myopia lenses can stimulate the internal muscle of the eye to adjust, and a certain amount of adjustment will bring a certain amount of collection. Myopia children do not wear a mirror, there is no opportunity to use the adjustment, over time, the adjustment function declines; Because there is no regulation of the stimulus collection, the collection ability of the eyes is also decreased, and it is easy to produce exopexia. On the other hand, in patients with myopia accompanied by intermittent exotropia, foot corrective lenses can control the increase in the degree of strabismus and maintain the binocular vision function as much as possible.

2. Anisometropia in both eyes. These children have unbalanced vision in both eyes, with large dioptric differences between the left and right eyes. At this time, the glasses not only correct vision, but also to achieve binocular vision balance, so that both eyes can be used at the same time to prevent the occurrence of exotropia. Moreover, the younger the children with anisometropia, the more they should wear glasses in time. Because children before the age of 6, visual function development is not complete, myopia does not wear glasses correction, often affect the development of children's eyeballs, thus affecting the development of vision, and even cause amblyopia in the eyes with large myopia degree.

How to choose myopia glasses?

Clinically, there are progressive myopia and non-progressive myopia. In non-progressive myopia, myopia increases less than 0.50D per year. In progressive myopia, the annual increase in diopter is 0.50D or more.

For children with non-progressive myopia, ordinary single-focus glasses can meet the needs.

For progressive myopia, functional mirrors with myopia control effect can be considered in the selection of lenses. Its theoretical basis is that a large number of studies have shown that when external light falls in front of the peripheral retina (also known as myopic defocus), it will inhibit eye growth, and when it falls behind the peripheral retina (faropic defocus), it will promote the growth of the eye axis. Therefore, the main principle of myopia control glasses currently on the market is to reduce farsightedness around the retina. In a 2018 follow-up study of these functional glasses by the Hong Kong Polytechnic University, it was found that compared with monocal glasses, the development of myopia in children wearing functional glasses was slowed by 52% and the growth of the eye axis was reduced by 62%.

There are many brands that provide lenses on the market now. For children, choosing lenses with good optical properties such as lightweight and wear-resistant, high clarity, good impact resistance, and strong ultraviolet resistance is conducive to visual development and improve visual quality. Various functional lenses control myopia principle is basically the same, the price is relatively high, parents should be considered according to the economic ability.