However, the unlimited business opportunities presented by these data almost universally exist for manufacturers and eyewear stores, with the concepts of children's glasses being difficult to operate, difficult to expand the market, and low profits. The main reason for this is that everyone has a few preconceived stereotypes: 1. Parents trust ophthalmology and usually take their children to the ophthalmology clinic for eye examination first, and then directly fit glasses in the ophthalmology department; 2. Children grow up so fast that their glasses only have a short lifespan of a few years; 3. Children's glasses usually only focus on functionality and practicality, without the fashionable charm of design orientation.