Analysis of LED light is harmful to the eyes (two)

So what is the damage done to our eyes by the blue light emitted by the LED lamp?

According to the data, the blue light in the daytime can improve people's attention, improve people's mood. At night, long time exposure to blue light will give the brain sends signal to reduce the secretion of melatonin, and the substance can adjust the biological rhythm, once the lack of human circadian rhythm will be disrupted, causing symptoms such as insomnia, long time exposure in LED under blue light will also affect people's mental health. Light enters the eye and is absorbed by the molecules of the visual cells, causing photochemical reactions, resulting in vision. This is also the cause of visual cell damage, especially the length of the blue light. The experimental results show that the photon energy in the visible spectrum is larger than that of the long wavelength photons, which is easy to be absorbed by some macromolecules. The molecular absorption of photons, in excited state of higher energy; interaction between the excited state and other molecules in the retina, will produce active oxygen and free radicals, caused by photochemical damage in the retina, resulting in cell apoptosis and function degradation.

Most of these damages are not recoverable. Eye cornea, lens and vitreous body will absorb a certain amount of blue light, can protect the retina from blue light. However, the absorption of blue light lens, will accelerate the process of turbidity, which will accelerate the formation of senile cataract.

Analysis of LED light is harmful to the eyes (two)

If LED light is harmful to the human body, how to protect it?

First of all, in order to protect the eyes, we should try to avoid prolonged work under strong light, reducing the face of a variety of fluorescent screen time. Proper use of protective glasses is also a way to protect the eyes. For example, the use of sunglasses in strong sunlight, long time to watch the screen, can be worn with a yellow, blue light absorbing more goggles.

Secondly, in general, the proportion of LED in the warm blue LED is less than that of the cold tone LED, and the brightness of the LED lamp with the diffuse cover is lower than that of the non cover or transparent cover. Consumers in the purchase of LED lighting products, should be concerned about the product's tone and surface brightness.

Finally, the daily office workers to the computer, it is difficult to completely avoid the blue light, then you need to add a layer of blue light protection film barrier Blu ray. It can absorb and convert high energy short wave blue light to protect the eyes.

Everything has two sides, there are advantages and disadvantages. As with other light sources, the LED's light radiation is also harmful to the human body. However, from the point of view of energy saving and environmental protection, it provides a great help to our society.