Ordinary nearsighted children's glasses lenses can image objects seen through the middle of the lens onto the retina, which indeed allows children to see clearly.

But it cannot slow down the development of myopia, and there are loopholes in this. Ordinary myopia glasses can only align the central macular area, and when viewing objects through the periphery of the lens, the image is still behind the retina. We call this "peripheral hyperopia defocus", also known as "posterior membrane defocus".

In the case of defocusing behind the membrane, if there is a continuous "defocusing signal" of pulling away from the periphery of the retina, to "see objects clearly", the self-regulation mechanism will cause the eyeball to elongate backward to eliminate peripheral farsightedness defocusing, further increasing the axial length of the eye, resulting in a deepening of myopia.

Is there no way to crack it? Of course, there are kids' eyeglasses online. To prevent the eye from focusing, it is best to make the surrounding object image fall in front of the retina, which is called 'myopia defocus'.

When optical technology is used to project the focal point behind the retina onto the retina or in front of it to form a clear image, it intervenes and suppresses the tendency of axial elongation, which can effectively suppress axial growth. This is the principle of defocus glasses that we want to talk about.

Defocus kids eyeglasses online lenses are one of the means to prevent and control myopia in children and adolescents, which to some extent delays the growth of myopia. While correcting vision, it can also control the growth of myopia, becoming a powerful tool for protecting children's visual health. The wearing effect of the experimental group with multi-point defocus lenses is better than that of the group with ordinary single-focus lenses, which can delay the progression of myopia.