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What is Computer Glass
Jingsheng Fan
What is Computer Glass

Each area of human activity has its own “occupational diseases”; often this list is opened by vision problems. In this article, we will tell you how to choose glasses for the computer, and why this choice is important.

What is computer glasses?


Computer glasses or glasses for work are specially adapted to the visual requirements that arise at the workplace and which other glasses may not cope with.
At first glance, glasses for computer use are no different from ordinary glasses, but looking closer at such glasses you can see shades of green, lilac and purple. The lenses of such glasses are coated with a special coating that acts as a filter. Such a multilayer filter blocks the spectral regions harmful to the eyes emitted by the monitor and helps to protect the eyes from constant flickering. Besides, the coating of computer glasses also contains an antistatic layer that protects the eyeglass lenses from magnetization and the eyes from the influence of a magnetic field.

Why do we need computer glasses?


How does a computer affect our eyesight? It is often believed that modern monitors do not spoil vision, which means that no special glasses are needed. On the one hand, it’s true. In the era of the dominance of old monitors, the vision of computer users was deteriorated because the mechanics of displaying the image on the screen greatly loaded the eyes. There is no such problem with modern screens: sitting at a computer is no more dangerous than reading a book - this has been proved by many scientists. But a person spends about 8-14 hours a day at the monitor. As a result, the eyes get a tremendous load:
- A man constantly looks at a very contrasting image that spoils his vision;
- rarely blinks, as a result, the eyes begin to dry out;
- For hours looking at an object located just 30-40 centimeters from the nose - as a result, the eyes begin to lose their ability to focus on distant objects.
Also, the image on any, even the best monitor, consists of many points - we don’t notice them, but these pixels are very annoying to the eye.
Any monitor or phone screen generates rays of the blue-violet spectrum. Due to the short wavelength, blue rays are easily scattered in the eye, which leads to a decrease in image contrast and lower vision. It is worth noting that even the most modern phones and monitors do not save the eyes from the blue part of the spectrum.
A constant presence in front of a computer or smartphone screen can lead to more serious pathologies: the progression of myopia, loss of transparency of the lens (cataract) and the occurrence of retinal dystrophy. Thus, for a modern person, too many sources of blue light are formed. To cope with this, the eyes need "help." For this purpose, there are specially designed glasses for working at a computer.
It is recommended to wear computer glasses to those who:
- work at the computer for more than 3 hours
- have increased eye fatigue
- have eyes afraid of the light
- whose eyes are tearing
- feel a burning sensation in the eyes

benifits of using anti blue light glass

Pros and cons of using computer glasses

Any safety glasses for working at a computer must be applied periodically and combined with other methods of protecting eyesight: gymnastics, technical breaks, rapid blinking, drops. When used correctly, the benefits of computer glasses are obvious:
-They neutralize the harmful effects of rays;
-Improve the quality of the visible image;
-Make reading and drawing easier;
-Reduce fatigue due to redistribution of the focal load.

Cons of computer glasses:

-The biggest drawback of computer glasses is the fact that the constant wearing of protection weakens visual function.
-A person should not forget that although glasses protect eyes, daily use of a computer is still harmful to vision.
-Another disadvantage is the high price, good glasses are quite expensive.

How to choose a suitable computer glass

How to choose glasses for the computer, and how will they help? We already know that the “safety glasses” that were popular in the era of old monitors are no longer needed. So how do modern computer glasses differ from ordinary ones?
Computer glasses protect our eyes in two ways:
- Reflect the rays. The best computer glasses for the computer have a special coating that reflects the rays of the blue-violet spectrum. As a result, you see softer colors, and your eyes strain less and do not get tired;
- Change the color of the beam. Older models are simply tinted glasses that shift the blue-violet rays to the warm spectrum. They are not as effective as reflective glasses, and they also distort colors. And one more difference: computer glasses can be without diopters, that is, for normal vision. And they are recommended to wear if you spend more than 2-3 hours a day at the monitor. As a result, computer glasses will help:
-Maintain high performance and allow eyes to get less tired;
-Avoid vision loss;
-Maintain normal eye hydration.
Which computer glasses are better? The answer to this question depends on whether your vision is good or not. If everything is fine with your eyes, you are only interested in the following parameters:
Protective coating. Of course, it is better to buy a reflective or blue filter glasses, but it also has its specifics. Some glasses remove half-tones and enhance the contrast of the image - suitable for writers. Some glasses preserve color reproduction - they are indispensable for designers. If there are no special requirements, buy glasses with brightened lenses - it will be more comfortable to work;
Lenses. The best lenses are German, Japanese or Swiss - they are both high-quality and durable. We create comfort for the eyes, it is better not to save on this.
Frame. Strong, durable and with a tight lens mount. When choosing frames, it’s best not to buy cheap frames. They are fragile, can break down or become deformed - as a result, the eyes become even more tired, the work turns into continuous torment. The color of the coating does not matter: it can be yellow, and green, and transparent, and bluish - this parameter does not affect the characteristics of the lenses themselves.