Teenage progressive children's glasses film: Due to the need for adjustment when looking up close, considering whether relaxing adjustment can reduce the eye pressure on teenagers while reading, thereby alleviating the deepening of myopia. Therefore, adjusting the progressive film for middle-aged and elderly people and developing it for use by teenagers.

This type of childrens glasses lens has certain requirements for the use of children's eye function. It does not mean that it can be used by all groups of people. If the right group of people is selected and matched appropriately, it can have a certain effect on children after use.

But if you give these lenses to unsuitable people, it may further cause problems with the child's adjustment and collection functions, and instead increase the occurrence of visual fatigue in the child. Therefore, it is recommended to use such products without strict fitting.

The use of defocusing principle in the design of children's myopia prevention and control childrens glasses lenses has a certain effect on preventing and controlling the growth rate of myopia in children and adolescents experiencing rapid growth. Similarly, the price is moving.

If the degree is high, there is no need to match low refractive index lenses in order to pursue higher Abbe numbers, after all, wearing lenses on the face requires comprehensive consideration.

If the weight and thickness of a pair of lenses are not suitable for wearing on the face, then slightly higher optical parameters will not benefit much.

Vocabulary about lenses: refractive index, wear resistance, spherical selection, Abbe number, anti-fouling ability, UV/blue light/radiation resistance, brand selection.

The refractive index of a lens is determined by the material used. When the center thickness is the same, lenses of the same degree and material have a higher refractive index and thinner edges.