The relationship between lack of red light spectrum and classroom myopia rate
Current students’ myopia rate is increasing day by day. Myopia in children and adolescents is closely related to the use of lighting in school classrooms. For this reason, many schools have been undergoing renovation and improvement in recent years.
Current students’ myopia rate is increasing day by day. Myopia in children and adolescents is closely related to the use of lighting in school classrooms. For this reason, many schools have been undergoing renovation and improvement in recent years. Taking China as an example, classroom lighting stipulates corresponding illumination, distance, color temperature and other conditions, but the light source spectrum has not been effectively specified.
In fact, among the effects of classroom lighting on myopia and even the physical and mental health of children and adolescents, one spectral band is very important, and that is the red light spectrum. According to research projects conducted by Guangdong Cosio Lighting Co., Ltd. and Jinan University Affiliated Hospital, Sun Yat-sen University Eye Hospital, Foshan Second People's Hospital and many other hospitals, the fullness of the red light spectrum directly affects the human body's eyesight, immunity, and skin health.
However, according to market surveys of many school classroom lighting, whether before or after renovation, most school classroom lighting lacks R9, that is, it is very lacking in the red light spectrum band. In this case, the modified classroom lighting actually does not perfectly reflect the role of preventing myopia in children and adolescents, let alone protecting the immunity, skin and other health factors of children and adolescents.
Why is the red light spectrum so important for children and adolescents? Concerned medical experts reported in a report titled Prevention and Control of Myopia in Adolescents: From Research Evidence to Clinical Practice proposed in his speech,as a new treatment option, light energy treatment for myopia has been tested in medical clinical experiments and can achieve the effect of controlling myopia in children and adolescents. The light energy treatment plan for myopia uses low-intensity, single-wavelength red light or near-infrared light in the range of 630-1000nm to irradiate myopic eyes twice a day for three minutes each time, thereby increasing the choroidal metabolic rate of the eye and reducing the scleral hypoxia rate. In other words, the lack of red light spectrum will lead to hypoxia in the sclera of the eyes, resulting in myopia. Therefore, the red light spectrum is particularly important for children and adolescents.
The lighting in many school classrooms generally lacks the red light spectrum. On the one hand, children and adolescents lack the time to obtain the red light spectrum from outdoor activities. On the other hand, they study and live under ordinary LED lighting fixtures that lack the red light spectrum for a long time. Their bodies are always lacking red light. Spectrum, thus leading to an increase in myopia rates among children and adolescents in our country, which urgently needs improvement.
As early as 2021, Dongguan City, Guangdong Province, China has taken the lead in promoting the application of school classroom lighting products with the Healthy Lighting throughout the city, and recommends the use of light negative oxygen ions (LNOI) technology to protect the eye health of children and adolescents in the city. From this, we also have reason to believe that our country’s school classroom lighting will increasingly using healthy lighting, thereby making up for the lack of R9 in classroom lighting, achieving a full spectrum, reducing the myopia rate of children and adolescents.