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As the new semester approaches, many schools have begun to use the holidays to modify the classroom. It is understood that safety and pollution issues are generally valued by the school. A small school leader in Zhengzhou said that the safety and health of students has always been the "basic line" of school work. However, in today's facility safety and decoration pollution, the classroom “light pollution†and students' vision health problems do not seem to receive the attention they deserve.
How many "glasses" can come back
The myopia rate of Chinese students has risen from the fourth in the world ranking in 1998 to the current second. According to the second National Physical Fitness Monitoring Report released by the State Sports General Administration on September 18, 2006, the pupils' poor eyesight rate was 31.67% for primary school students, 58.07% for junior high school students, and 76.02% for high school students. At the university, 83 out of every 100 students had poor eyesight and showed an increasing trend of “levelâ€. The problem of students’ eyesight has become increasingly serious. The study found that there are two major reasons for the formation of myopia, congenital hereditary and acquired eyesight. Peking University Children and Adolescent Health Research Institute confirmed that true hereditary myopia accounts for only about 40% of all myopia, and environmental improvement is prevention of myopia. Focus on it. According to statistics, students spend about 60% of their time in the classroom. Therefore, whether the classroom lighting environment is good or not is crucial to prevent students from myopia.
Not long ago, the research on vision health and lighting environment of primary and middle school students released by Tongji University showed that there are many health hazards in the lighting environment of primary and secondary schools: First, blackboard lighting is easily overlooked. Only 45% of the primary and secondary schools surveyed have set up special blackboard luminaires. The illuminance is not enough, there is no blackboard lamp, the reflection glare is serious, and it becomes a prominent performance of the blackboard illumination. Second, the uniformity of the horizontal illumination of the classroom classroom is poor. In addition, the glare of the classroom is also a problem that the student teacher reflects more strongly.
Zhu Li, chief physician of Shanghai Peace Eye Hospital, pointed out that the basic purpose of lighting design in school classrooms is to create a comfortable visual environment for teachers and students to achieve the best teaching results. Learning in a poor classroom lighting environment may lead to excessive tension in the eye muscles of the students, resulting in visual physiology such as visual fatigue. Therefore, it is urgent to improve the classroom light environment and scientifically and rationally arrange classroom lighting.
Scientific use of light, health mobilization
According to the “Standards for Lighting and Lighting Hygiene of Primary and Secondary Schools†promulgated by the Ministry of Health, the requirements for uniformity of illumination, blackboard lights, glare problems and lamp settings are all raised. However, due to the old school classroom facilities, the standard renovation of lighting facilities is difficult to "step in place." Tongji University and Sanxiong? Aurora “Light Health†research team learned through field investigations that even if the lamps are fully equipped, due to the lack of scientific guidance in lighting design, the real “standard†is not easy.
In this regard, the reporter interviewed Sanxiong? General Manager of Aurora Lighting Zhang Yutao, Zhang Yutao told reporters that based on the research with Tongji University and Shanghai Peace Eye Hospital, Sanxiong? Aurora Lighting has provided a scientific and systematic solution to the health problems of classrooms. Solution: First, use lamps that have been designed with professional scientific light distribution. This allows the classroom to obtain sufficient illumination while ensuring uniformity of illumination and to address the effects of glare and protect students' vision. The scientific design and installation of the luminaire can effectively prevent many students in the survey from reflecting the problem of “lighting up when they look up†and easy visual fatigue during class. Second, the luminaire uses a high frequency electronic ballast. At present, the light emitted by the fluorescent lamp of the universal ballast will produce 100 times of light and dark changes per second, and it is easy to use eye fatigue in the "strobe" state for a long time. The light emitted by the lamp using the high-frequency electronic ballast has no stroboscopic light, which can effectively alleviate the eye fatigue and protect the eyesight health. Third, set the blackboard light and make rational use of natural light.
It is understood that the relevant government departments are planning to take corresponding measures to completely solve the problem of classroom science lighting, so that students can get rid of the "light pollution" of the classroom while enjoying a lot of knowledge through books, computers and television.
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