Anti-myopia glasses have a very limited effect in preventing myopia, and it is necessary to develop good eye habits to prevent myopia, and anti-myopia glasses cannot be relied upon. Anti-myopia glasses usually use the principle of distancing mirror, in the view of near objects, through the adjustment of anti-myopia glasses, can produce the virtual effect of the view of distant objects. Anti-myopia glasses can be divided into several categories according to their nature, one is the refractive focus of near objects to the virtual distance, offsetting the peripheral field of view of near objects after the out-of-focus. The second is to regulate the eyes to do near and far focusing movement, to prevent myopia. Wearing anti-myopia glasses can prevent myopia to a certain extent, but the effect is very limited. If you want to prevent myopia, you still need to do outdoor activities regularly and reduce the frequency of using electronic products, which can prevent myopia from occurring fundamentally.