The invention of lighting has brought great benefits to us human beings. It not only reduces the constraints imposed on us by the dark night, and greatly extends our activity time, but the gorgeous and bright lighting also gives us a good visual experience in our lives. All aspects of the light are inseparable from the role of light.
When you choose tempered film for your mobile phone and when you buy glasses, I believe you have heard of the word "blue light". Perhaps you have heard of blue light before and know that blue light is bad for our eyes, but you know what LED lights are Does it contain blue light? Is the blue light contained in the LED lamp harmful?
The hazards of blue light:
Our common LED lights have a lot of blue light. When our eyes radiate too much blue light, it will easily cause oxidative stress in our retinal cells, causing irreversible photochemical damage, and causing great damage to our eyes. .
1. Decreased vision
Blue light has a high ability. It can penetrate the lens of our eyes and reach the retina, causing the atrophy or even death of the retinal pigment epithelial cells of our eyes, which will directly cause our vision loss and even blindness. Moreover, the death damage of light-sensitive cells caused by this blue is irreversible.
2. Macular degeneration, cataract
Blue light can cause macular degeneration in the eyes. This is because when blue light radiates our eyes, except for part of it will be absorbed by the lens to form cataracts, most of the blue light will penetrate the lens and cause macular degeneration in the eyes.
3. Visual fatigue
Blue light is a light with a shorter wavelength, which will make the focus point not normally fall at the center of the retina under the action of blue light, but a relatively forward position, which will make people’s eyes easily unconscious. , In a state of high tension, making people prone to visual fatigue.
4. Inhibit melatonin
Blue light stimulates our brains, inhibits the secretion of melatonin, makes the content of melatonin insufficient, affects our sleep quality, makes our body insufficiently rested, and ultimately affects our health.
Can LED lights be used?
We have learned about the various hazards of blue light to us, but not all lights will harm our eyes. For some of the electronic products we see more commonly, the blue light emitted by them is basically zero and one hazard, and will not cause damage to our eyes. But if it is some of the more powerful lights such as the headlights of some cars, it may hurt our eyes, and we should avoid looking directly.
Although the blue light contained in LED lights will not directly cause damage to our eyes, if we often use electronic products for a long time, it can still cause excessive fatigue to our eyes and harm our eyes.
