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The situation of juvenile myopia is not optimistic. How to prevent and control myopia in schools?

The situation of juvenile myopia is not optimistic. How to prevent and control myopia in schools?

2021-06-03

A strong youth makes a strong country. Teenagers bear the future of the motherland, but now many teenagers will have bad living habits, leading to a threat to their health, especially myopia. The incidence rate of myopia in adolescents is very high, which is related to heavy duty of daily learning, eye habits or lighting environment.

A survey shows that Chinese teenagers spend about 60% of their time in the classroom every day. The classroom is the second home for teenagers and plays an important role in their growth. If the classroom lighting effect is not up to the standard, the light will make teenagers short-sighted, the heavy will affect their physical and mental health. Therefore, the prevention and control of myopia, schools should do a good job of classroom lighting control!

There are six national standards for classroom lighting: illumination, glare, color rendering index, stroboscopic, color temperature and blue light hazard. These six parameters are also tested during acceptance, not that the brighter the light, the better!

1. Illuminance

According to the hygienic standard for daylighting and lighting of primary and secondary school classrooms, the average illumination value on the classroom desk should not be less than 300lx; The blackboard in the classroom should be equipped with local lighting, and the average illumination value should not be less than 500lx. If the classroom lighting is far below the standard value, the pupil of the students' eyes will be opened to the maximum. In order to get enough light, the head of the students will be unconsciously low, which is easy to cause myopia.

2. Glare

Glare refers to the strong light from the light source through a variety of ways into our eyes, causing a dazzle, blurred, dazzling feeling to our eyes. The light of classroom lighting should be uniform and soft, the brightness is appropriate, and the illumination is uniform.

3. Color rendering index

The color rendering index refers to the color display under the illumination of the light source; The closer the display color is to that of natural light or standard light, the better the color rendering is, and vice versa. Classroom lighting should choose high color rendering index, in order to restore the original color of the object.

4. Optical strobe

Stroboscopic light refers to the periodic change of light intensity and brightness with time. If there is a stroboscopic, the pupil will sometimes expand and sometimes contract. If you use such a lamp for a long time, your eyes will be sore and tired, and your vision will be affected. Eye protection lamps without stroboscopic should be selected for classroom lighting.

5. Color temperature

Most classrooms generally use high color temperature fluorescent tubes (6500k), because the light color is too white, it is easy to cause students to be excited and fatigue. Classroom lighting should use color temperature in the range of 3300k-5500k.

6. Blue light hazard

Blue light belongs to visible light, the wavelength is between 400 ~ 500 nm, and the color seen by human eyes is blue, so this band of light is called blue light, which generally exists in people's daily life. Natural light spectrum contains blue light. The wavelength range of harmful blue light is 400 ~ 480 nm. The longer the harmful blue light is, the higher the energy is, and the stronger the penetrating power is. It will cause the atrophy and death of retinal pigment epithelial cells, and the death of photosensitive cells will lead to the decline of vision.

Therefore, the school needs to create a classroom lighting environment in line with national standards! 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" brand!

As a promoter of campus lighting light health, Huahui lighting is one of the first batch of high-quality classroom lighting units in South China, and also one of the "top ten educational lighting brands" in China's lighting industry in 2020. Aiming at the problems existing in the field of classroom lighting, led eye protection classroom lamp and led eye protection blackboard lamp are introduced from the perspective of vision health and human comfort Glare, blue light, illumination and other issues are strictly controlled to avoid the harm of bad lighting to the eyes

1. No flicker and comfortable to use;

2. The color is more realistic and the vision is clearer, and the color rendering index is more than 95;

3. Anti glare design, UGR < 16, no eye injury;

4. The color temperature is 5000K and the light is softer;

5. The illumination in the classroom is even and brighter;

6. No harmful blue light, no mercury and lead pollution, more healthy.

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!

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