In the past, the theme of the 26th National Eye day was "focus on eye health in general". A survey shows that: the overall myopia rate of children and adolescents in China is 53.6%, including 14.5% of 6-year-old children, 36.0% of primary school students, 71.6% of junior high school students and 81.0% of senior high school students. The task of myopia prevention and control is very arduous. Today, let's talk about "prevention and control of juvenile myopia".
1、 How does myopia happen?
The human eye needs to focus. The clearer the font and the closer the distance, the faster the adjustment speed of the eye will be. When looking closer, people's eyes also need to converge, which is commonly known as set.
How does the eye adjust? Depending on the contraction of the ciliary muscle, the lens becomes convex, so that the object image is clearly projected on the retina. If the time is too long and the eye is used in close range continuously, the ciliary muscle will be tired and in a state of cramp. This time is called pseudomyopia. Through rest and some drugs to relieve fatigue, the vision can return to normal.
2、 How can teenagers prevent and control myopia?
1) Daily exposure to outdoor natural light for more than 90 minutes
Clinical studies have proved that increasing outdoor activities can reduce the incidence of myopia in children and adolescents. Therefore, parents should actively guide students to outdoor activities or physical exercise in the sun, so that students can be exposed to outdoor natural light for more than 90 minutes every day when they are at home. The school shall not occupy the time of physical education, arrange the contents unrelated to physical exercise, and ensure that the primary and secondary school students have more than one hour of physical activities every day when they are in school.
2) School classroom lighting to meet national standards
According to relevant standards, all classrooms should be equipped with artificial lighting, and the average illuminance value on the classroom desk should not be less than 300lx, and the illuminance uniformity should not be less than 0.7; The blackboard in the classroom should be equipped with local lighting, the average illumination value should not be less than 500lx, and the uniformity of illumination should not be less than 0.8. If the average illumination of the desk and blackboard is not enough, and the blackboard is not specially set with lighting, it is easy to cause students' eye fatigue. Therefore, classroom lighting needs to be selected in strict accordance with the national standard, lighting manufacturers and lighting lamps.
We recommend all primary and secondary schools and institutions (including: public school classroom lighting, private school classroom lighting, private school classroom lighting, experimental school classroom lighting, educational institutions, etc.) to choose "Huahui lighting"!
As a school lighting health promoter, Huahui lighting is one of the first batch of high-quality classroom lighting units in South China. It is also one of the "top ten education lighting brands" in China's lighting industry in 2020. It strictly controls the color temperature, glare, blue light, illumination and other problems in education lighting, so as to avoid harmful lighting to students' eyesight health!
Huahui lighting has designed led eye protection classroom lamp and led eye protection blackboard lamp, which are specially used for classroom lighting. They meet the national standard. The average (constant) illumination of desks is greater than 300lx, and the illumination uniformity is 0.7; The blackboard maintains an average (constant) illumination of 500lx, and the uniformity of illumination is 0.8; The color rendering index is more than 90 and the color reduction is high; Grid anti glare design, glare value is less than 16, no glare; Color temperature is 5000K, comfortable and soft; The illumination of the whole classroom is uniform, without stroboscopic and blue light hazards.
Huahui led eye protection classroom lamp and led eye protection blackboard lamp can be used together with Huahui lighting aiot intelligent education lighting overall solution. Through self-developed intelligent lighting products, equipped with self-developed intelligent box (such as intelligent power distribution box or intelligent air switch), intelligent full touch screen scene switch, remote control or mobile app can be used to easily switch the lighting mode that meets the needs of teaching, Realize the constant illumination of the whole classroom, one button scene control, curtain linkage, UV sterilization and other intelligent needs!