Anti-Blu-ray glasses are now well known in the market.
Now let's understand how blue light hurts our eyes.
I remember that our light bulb is still a round and fat incandescent lamp, and our mobile phone is still Nokia, which is super resistant to falling and can only answer phone calls.
It seems that overnight, the daily lighting equipment has become LED (Light emitting diode)
Lamps, energy-saving lamps, our mobile phones have become intelligent machines that chat, take photos, surf the Internet, watch movies and play games.
While it is convenient and rich in life, the controversy over whether mobile phones, tablets, computers and LED lights are harmful to the eyes has been constant.
The focus of the dispute is how much the blue light they emit will hurt the eyes.
What is the blue light from electronic devices such as LED lights? Why does blue light hurt the eyes?
How can we reduce injuries without mobile phones and LED? What is blue light?
Experts said that there are seven colors of visible light in nature, from which the word colorful world comes.
What we call blue light is a wavelength of 380-
500nm visible light, as one of the three primary colors of natural light, blue light is the highest energy light with the shortest wavelength and the highest frequency, so it is widely used in LED technology to improve the quality of electronic products.
Research shows that the display screens of digital products based on LED technology such as computer monitors, mobile phones and tablet computers will emit high-energy blue light.
Although LED has the advantages of energy saving and electricity saving, the high-energy blue light it generates can penetrate the cornea and lens and reach the macular area of the fundus, causing damage to the macular area at the end of the eyeball.
Under such illumination, the toxicity of retinal pigment epithelium is greatly increased.
The damage effect of high-energy blue light is a chain reaction, which first causes the death of light-sensitive cells, then causes retinal macular degeneration, and then leads to gradual decline or even complete loss of vision, and this kind of damage is often irreversible.
The natural sunlight and incandescent light we see are mixed light of various wavelengths of light, which can be refracted by prisms or raindrops to see the gorgeous rainbow.
Different from natural light and incandescent light, the essence of LED lamp is light emitting diode, which can only emit monochromatic light.
In order to get white light, the LED chip must first emit high-energy blue light with a wavelength of 465nm, then excite the fluorescent powder to emit yellow light, and the light of the two colors is mixed into white light.
If you want to make the LED light whiter, increase the proportion of blue light;
If you want the light to be warmer, increase the amount of yellow light.
The LED light of mobile phones and various screens is mostly composed of blue, green and yellow. BlueRay of harm don't say other first figure. I believe everyone understands.
The blue light that we are most exposed to in our daily life comes from various LCD screens and LED lights.
From mobile phones, to computers, to tablets and then to televisions, LCD monitors, once advertised as synonymous with health, have now become 'killers' that can release blue light '?
In fact, sunlight, a mixed light, also contains blue light. Nature itself is full of blue light. For example, the sky is blue. If it is really poisonous, humans and animals will have been blind for a long time.
Research shows that computer monitors, mobile phones, tablet computers, LCD TVs and other digital products based on LED technology will emit high-energy blue light.
High-energy blue light can pass through the retina, causing damage to the macular region at the end of the eyeball, thus threatening our eye health.
Blu-ray is the main cause of digital visual fatigue.
Therefore, the damage of blue light to retina lies in a large amount of exposure and long-term accumulation.
When light enters the retina, the retina begins to capture light particles to exert its photosensitive function.
After this accumulation, and because blue light carries a large amount of energy, retinal cells that capture excessive blue light particles begin to die, thus causing retinal damage.
Over time, we will feel that our eyes are prone to fatigue, soreness, dryness, even tears and redness.
How to prevent if the healthiest way is to minimize contact with LED artificial light sources, indoor lighting should use fluorescent lamps as much as possible, and the use time of mobile phones and computers should be reduced as much as possible.
Long-term incorrect use of electronic products may also cause many health problems such as 'mouse hand', 'mobile phone thumb' and 'short message neck.
However, it is impossible to break away from public light sources and electronic products in modern life. Therefore, wearing anti-blue glasses is an effective way to prevent blue light accumulation damage.
The principle is that through the coated lens, only the blue light of the wavelength near 460nm is blocked, and the blue light is prevented from entering the eyes as far as possible without causing chromatic aberration.
How do we protect ourselves in the face of blue light?
- Keep a comfortable and suitable distance between the computer and the face (Basically close to the length of our arms)
At the same time, avoid getting closer and closer during work.
- Keep your eyes as far away as possible when using your mobile phone. Know that the farther away your eyes are from the screen, the smaller the degree of visual fatigue will be.
Or you can enlarge the content of the screen to a distance suitable for viewing;
- Rest for 20 seconds every 20 minutes and look at things far away or 20 feet away. This is the so-called '20-20-20 rules '.
In addition, use your hands to relax the muscles around the eyes. In addition, close your eyes and turn your eyes to let the eyes relax completely; 4, often eye examination.
Even small problems can cause visual fatigue to cause vision loss.
At the same time, go to the Optometry Center, the optical shop to consult the ophthalmologist, and the optometry expert to wear the glasses that are most suitable for their readings.
5, wearing a pair of blue light reducing glasses, in fact, more and more consumers are wearing digital anti-blue glasses on the market, especially the game fans, digital control, programmers, engineers, advertisers, designers and other new human beings have been inseparable from the eye artifact--Anti-blue glasses.