of myopia to be more prophylactic and to pay attention to the influence of acquired factors. Adolescents are in the development stage, individual nutrition status, eye ball wall hardness, the resistance of the external pressure is affected by environmental factors. Therefore, how to prevent myopia is a multifaceted problem.РFirst of all, you should pay attention to the use of eye hygiene: including the correct sitting position when studying, reading and writing with an eye and book distance of about 0.3 m. Don't read and write for long periods of time. Read between 30 minutes and 1h. You should take a break and look away from the distance. The light e from the top left of the job and avoid reading in direct or dim light. The reading should be clear, color contrast should be soft and so on.
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