Myopia control system: I. Features: 1. 1-5 generations of myopia control instruments; 2. 5 types of pathogenesis of myopia can be targeted; 3. single function, multi-function or comprehensive function myopia instruments are selected by myopia control experts according to the condition; 4. difficult to control myopia can apply for consultation with famous myopia control experts (Professor Liu Dongguang, etc.) and propose a strong control plan for systematic and comprehensive control. The scope of application: 1, myopia in young children; 2, congenital myopia (one parent is highly myopic or both parents are myopic); 3, myopia develops rapidly (more than 100 degrees per year); 4, myopia with eye convexity or fundus degeneration; 5, persistent myopia that is not well controlled by other methods.