Refers to the combination of low-degree convex lens and prism with inward base. According to the most important "accommodation theory" and "myopia compensation theory" of myopia, the combination of convex lens and prism with inward base can transform the light of myopia eyes into parallel light and improve the environment of myopia eyes.
Extended data:
Prisms provide a means to improve students' close-up eye environment through combination. It is a functional glasses to control pseudomyopia and prevent true myopia, not a therapeutic instrument for myopia. At present, many similar products on the market belong to this kind of "low-degree convex lens with inward prism".
Prism effect in optometry glasses needs to be strictly avoided. In the low-degree convex lens and prism with inward base, the combination of spherical lens and prism is the core technology to prevent myopia.
In the process of practice, Shimao Optics has continuously innovated, and completed the design and manufacture of two pairs of glasses, sets of mirrors, additional pendants, dual-optical far-near integrated lenses and progressive far-near integrated lenses. At the same time, we protected the intellectual property rights related to product design and production, and applied for the national patent for new and practical models: ZL20 1 120066067.7.
Baidu encyclopedia-prism combination
Study on prevention of myopia by Baidu Encyclopedia-prism lens combination