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| blue screen light affects |
screen light effects a person and his health
Have you ever wondered how much time you spend in front of a digital screen? The development of technology has greatly enhanced the presence of blue in our daily lives. At home, at work, in a store, bank and bus - we surrounded ourselves with gadgets and cannot imagine our life without instant messengers and email.
In the life of a modern person there is too much artificial lighting. We close in rooms with curtained windows, turn on the lights and, together with our favorite gadget, we can sit all day in one place. Moreover, it doesn’t matter - a person makes multi-million dollar transactions or lays out solitaire.
Not for nothing that many in childhood were forbidden to watch TV and play computer games all day long, driving out into the street. Now we are intimidated by brain and skin cancer, and conscious parents, in turn, are trying in every possible way to push their child off the smartphone. Although some arguments seem absurd, the general wariness over the dangers of digital technology is not accidental, because excessive use of electronic devices will not turn out to be good for health.
If the computer can be left on the desktop, then parting with a smartphone for many seems an impossible sacrifice. However, checking notifications every 10 minutes (even if you didn’t hear a sound notification) means giving yourself even more to the blue light that gadgets emit.
What kind of light is this and how it affects a person - we tell further.
Material content
What is blue light?
How blue light affects health
Eyes
Leather
Sleep and Mental Health
Positive effect of blue light
How to protect yourself from blue light
What is blue light?
Light consists of particles that move like energy waves. These particles differ in length and intensity depending on where they fall on the spectrum. Some waves of light are visible to the human eye. Among them are red, orange, yellow, green, blue and purple. But there are those that But without special devices, we cannot see. It is infrared and ultraviolet.
Blue light, or HEV radiation, is the color in the spectrum of visible light. That is, a person sees him with the naked eye. The more intense the light, the greater the effect it has on the body.
Its main source is the sun. In addition to the well-known ultraviolet, the celestial body emits 25-30% of blue light. That is, every time we go outside, we come under its influence.
However, today we get much more artificial blue light. First of all, from the screens of electronic devices - TVs, smartphones, computers and tablets.
Modern electronic devices are equipped with LED backlight technology, thanks to which we can see the image on the screen more clearly and vividly. But this technology also increases the level of exposure to blue light, which in large quantities harms our health.
Also blue light emit fluorescent (fluorescent lamp) and LED lamps (LED). They are much more energy efficient than obsolete incandescent bulbs. But at the same time they produce much more blue light.
How blue light affects health
The harmful effects of mobile phones and other gadgets have been talked about for a long time. If before nobody could really explain what our devices emit so harmful and how it affects our body. That relatively recently, scientists have found a connection between artificial blue light and lack of sleep, eye fatigue, headaches and even loss of vision in old age.
The risk of these ailments is much higher for “owls” who like to stay up after midnight. Watch TV shows until the morning and close the deadlines “for yesterday” - according to many, the ideal time for these things is night. However, in the dark, the intensity of blue light from the gadget screens increases significantly. Of course, this does not have the best effect on different organs and the general well-being of a person.
Eyes
The most harmful wavelengths for your eyes are the highest energies. The light with the highest energy in the spectrum is invisible, ultraviolet. Fortunately, our eyes have evolved to naturally protect us from most ultraviolet rays.
Blue light is the next strongest wavelength, and it represents the greatest danger to retinal damage.
One problem is that our eyes are not really capable of blocking blue light. That's why blue light was associated with something called computer vision, a condition that includes a number of symptoms, including headaches, blurred vision, and eye strain.
Dry, red and irritated eyes, blurred vision and hypersensitivity to light - these are true symptoms of today's widespread computer visual syndrome. It appears as a result of prolonged use of the computer, exposure to blue light and focusing on one object.
In addition to eye problems, computer syndrome can cause headaches, difficulty concentrating, and sometimes pain in the neck and shoulders.
Leather
As it turned out, not only ultraviolet light harms our beauty. Many care brands have begun to produce specialized lines of cosmetics that protect and restore skin from exposure to blue light. Unfortunately or fortunately, but this is not an advertising move, because such an alarm has every reason to be justified.
Dermatologists have examined how blue light affects our skin. As a result, they found that this type of radiation causes photoaging, in particular wrinkles, impaired skin elasticity and hyperpigmentation. The explanation is as follows: when blue light penetrates the skin, active forms of oxygen are formed. They lead to DNA damage, thereby causing inflammation and breakdown of collagen and elastin, and also stimulate the production of more pigment.
However, if you control the time spent in front of the screen of the gadget, it is completely safe for the skin and health in general.
Sleep and Mental Health
If you have the habit of scrolling the social media feed to better fall asleep, we recommend that you tie this up. The light from the smartphone screen disrupts the production of melatonin - the hormone that is responsible for regulating sleep and wakefulness.
When the sun sets, the brain receives a signal that it is necessary to begin to secrete melatonin. After all, it is he who causes drowsiness and ultimately sends us into a deep and calm sleep. But exposure to artificial blue light at night disrupts this process.
It “deceives” the brain, making you think that you live in a world where there is always a white day. As a result, the brain decides that you should be alert and active. So there is insomnia and a sense of anxiety, which prevents a good rest.
As a result of lack of sleep, we are at greater risk for cardiovascular disease, diabetes, and even depression.
Positive effect of blue light
After all of the above, it is difficult to believe that blue light can be useful for our body. However, in this form of radiation there really are good properties, the effectiveness of which is difficult to dispute.
In the morning, when the blue light of the sun enters our eyes, it sends a signal to our brain that the day has begun, and it is time to feel full of energy and do great things. Studies show that in moderation, natural blue light increases concentration, improves response, and improves mood.
That is why, using HEV, radiation is used to treat seasonal affective disorder. This is the kind of depression that people who lack sunshine most often suffer from. Residents of the northern countries, where it is dark and cold most of the year, are most affected.
Also, blue light helps regulate sleep patterns. If you suffer from insomnia, HEV radiation helps to restore the correct mode of falling asleep and waking up.
How to protect yourself from blue light
Use dim red light for night lighting. It has the least ability to shift circadian rhythm and suppress melatonin.
Try not to look at the bright screens two to three hours before bedtime.
Turn off electronic devices an hour before bedtime.
Try not to use tablets, computers, smartphones and any other gadgets with luminous liquid crystal displays at night.
In the dark, switch smartphones to night mode. Most modern models have this feature.
Do not install fluorescent and LED lamps with excess radiation in the blue region of the spectrum in rooms where you spend time at night.
Visit the street more during daylight hours. This will help you fall asleep faster and sleep better, and also increase activity and clarity of mind.
Wear safety glasses. Some manufacturers of optics produce a line of glasses with special coatings that help reduce the effect of blue light on the eyes.
Use special applications. For example, f.lux. It adjusts the color temperature on your screen and thus reduces the effect of blue.
Take a break while working at the computer. Even on the busiest days, you need to move away from the screen from time to time to give your eyes and brain a rest. This will reduce the amount of blue light that you are exposed to during the day.
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