According to the World Health Organization, as many as 600 million people in China suffer from myopia. Among younger people, the rate of myopia is rising rapidly, and the task of prevention and control is arduous. This product is easy to carry and can detect the user's vision status at any time. The detection data is automatically uploaded after connecting to the app, which in turn converts the user's data into a chart, which displays the trend of vision changes. The algorithm then analyzes the recent vision situation and offers effective and appropriate advice.