In order to strengthen the prevention and control of myopia among children and adolescents in the new era, with the consent of the State Council, the Ministry of Education, together with the National Health and Wellness Committee and other departments, issued the Implementation Plan for Comprehensive Prevention and Control of Myopia among Children and Adolescents, requiring schools to improve the visual environment, teaching facilities and conditions, encouraging the purchase of adjustable desks and chairs and orthotics that meet the standards, providing students with a learning environment that meets the requirements of eye hygiene, and strictly following the construction standards of ordinary primary and secondary schools and secondary vocational schools. Daylighting and lighting requirements for classrooms, dormitories and libraries (reading rooms). Implement and use lighting equipment that is beneficial to vision health. The compliance rate of classroom lighting hygiene standard is 100%.

Lighting requirements for classrooms:

First of all, all classrooms should be equipped with artificial lighting.

Second, the average illuminance value kept on the desks in the classroom should not be less than 300LX(LX is the illuminance unit, and 1LX is the illuminance when the luminous flux of 1 lumen is evenly distributed on the area of 1 m2), and its illuminance uniformity should not be less than 0.7 (illuminance uniformity is the ratio of the minimum illuminance to the average illuminance on the specified surface).

Three, the classroom blackboard should be equipped with local lighting, the average illuminance (at the moment when the lighting device must be maintained, the average illuminance on the specified surface) should not be less than 500LX, and the illuminance uniformity should not be less than 0.8.

Four, in order to reduce the direct glare caused by the lighting source, the classroom should not use naked lights for lighting. The minimum hanging height of lamps and lanterns from the desktop should not be less than 1.7m, and the arrangement of lamps and lanterns should adopt the arrangement that the long axis is perpendicular to the blackboard surface. For ladder classrooms, students in the front row should not be dazzled directly in the back row.

5. The unified glare value of the classroom (the unified glare value is the psychological parameter of the subjective reaction of the light emitted by the lighting device in the visual environment, which is calculated according to the unified glare value formula) should not be greater than 19.

Six, under the condition of keeping the average illuminance value of 300LX, the current value of classroom lighting power density should not be higher than 1 1W/㎡, and the conditional area should be lower than 9W/㎡.

Seven, lighting design calculation of illuminance, its maintenance coefficient should be 0.8.

Eight, classroom lighting measurement method according to GB/T 5700.