Modern life has been inseparable from the cell phone, eye busy people overuse eyes, eyes overloaded use, the eyesight potential global spread, myopia population base continues to expand, according to the World Health Organization data, the world's myopic population is approaching 2.8 billion people, in 2050, even higher than the 5 billion myopic population, which the proportion of "slippery generation" students with myopia continues to climb high, the rate of myopia in elementary school is more than 50%, the young myopia control can not be delayed! The need to control myopia among young people is urgent! In the demand for vision correction and the trend of face value economy, depending on the contact lenses in the aesthetic and social better. Contact lenses continue to see a rising trend in the market due to the demand for improved vision correction from a large myopic population, the trend of younger first-time wearers, the emergence of the trend of cosmetic wear, and the launch of new functional innovations, which have diversified to meet the needs of consumers for vision care and formed a habit of daily wear, and contact lenses have become an indispensable necessity for many people.