Recently, people spending a lot of time at the computer begin to notice that their visual acuity worsens , doubling of objects appears, tear secretion increases, the sensation of mote under the eyelids, pain in the eye area appears, eyeballs look inflamed. The manifestation of these symptoms is called computer visual syndrome (GLC).
Statistical studies have shown that SCL is observed in 75% of people who spend several hours at a computer every day.
What is the cause of the detrimental effect of communication with a computer on a person’s vision
The brain and visual organs of a person differently perceive the image from the monitor screen and the image located on paper. The text on paper has a clear outline, while the letters on the computer screen are not clear and contrasting enough.
Images on the monitor are formed using tiny radiation points (pixels), which are usually brighter towards the center than at the edges of the screen. These nuances make it difficult to focus the eyes, which leads to overloading the visual channel when working with a computer. Also, the blue-violet frequency radiation generated by monitors also has a negative effect on the eye tissues.
In addition, with concentrated attention on the screen, a person blinks much less often than usual. At the same time, the work of the lacrimal glands is disrupted, and the protective, nourishing and light-refracting functions deteriorate. This leads to dry eye syndrome.
In connection with these negative factors, the necessity of protecting the eyes from the harmful effects of the computer on vision appeared.
What measures to take from the harmful effects of the computer
Is it possible to abandon a computer in the era of information technology, when it became indispensable both at work and at home? Of course not, because now no organization or institution can do without a computer.
There are no age restrictions for regular computer users. Now a significant part of the day at the computer is spent by people from 6 to 70 years old. How to protect vision from the harmful effects of the computer?
Computer glasses - eye protection
Glasses for the computer are good eye protection when working with a PC; expert reviews also advise users to purchase this accessory.
They have special lenses designed to reduce the development of symptoms associated with CVD.
A special interference filter is applied to the surface of the lenses of the computer glasses, which absorbs the rays of the blue-violet spectrum. The optical characteristics of this coating can increase the resolution of the eye, which leads to a decrease in visual load.
Glasses for working at a computer have no contraindications. For users with normal vision, glasses with glasses without diopters are produced.
For those who constantly wear glasses with diopters, you can pick up ready-made computer glasses in optics or go to a specialized salon where they will make glasses for the computer with the necessary parameters, pay attention to all your wishes and reviews.
Glasses for the computer are an important accessory. Let's take a closer look at the selection of glasses for the computer. To ensure comfortable work behind the monitor, lenses are made for computer glasses of several types, which we will talk about.
Monofocal Lenses
In these lenses, the optical zone allows you to observe the computer screen, providing a wider view. Typically, these lenses are chosen by people with normal vision. But with myopia or farsightedness with such glasses, distant or close objects will have blurry outlines.
Bifocal lenses
The upper half of these lenses is designed to focus on the computer screen, and the lower part is adapted for the perception of objects from close range. A border separating the two optical zones is visible on these lenses. Although these lenses provide comfortable computer work and close reading, distant objects will be perceived vaguely.
Progressive lenses
Outwardly, they are similar to conventional monofocal lenses, since there are no clear boundaries between the optical zones. However, in progressive lenses there are three segments with different viewing capabilities. The upper zone is for viewing objects at a long distance, the wide buffer zone is for working on a computer, and the lower part of the lens is designed to focus at short distances. This type of lens is the most comfortable, because in such glasses you can clearly see at any distance, feeling more natural.
Glasses for a computer, reviews of ophthalmologists confirm this, minimize the harmful effects on the eyes from fluorescent lighting lamps due to their properties not to let through the blue-violet rays that adversely affect the eyes. On sunny days outside, the special coating of computer glasses will reliably protect against ultraviolet rays. In this situation, anti-glare glasses for the computer are of double benefit to their owners.
How to choose glasses for working at a computer
Select computer glasses should be based on the type of work at the computer. If the lion's share of the work is related to texts, then it is better to choose glasses with lenses that enhance contrast and remove halftones. When working with graphic programs, they will be the best option.
In this case, you should ask the seller in detail about the selected model of glasses and familiarize yourself with the relevant documentation for them. If this is not available, then it is advisable to refrain from buying in this salon.
For gamers, lovers of dynamic scenes, anti-glare glasses for the computer are suitable, reviews on such accessories can, of course, be viewed on the Internet, but it is better to purchase optics for working with computers in special salons.
Buying optics over the Internet is undesirable, as there is a high probability of acquiring a fake. Price is not an indicator of quality, but this criterion should not be discarded either. In order not to pay twice, it is better to spend money on high-quality safety glasses for the computer. User reviews indicate that glasses of German, Japanese and Swiss manufacturers deserve more trust. The quality of domestic and Chinese computer optics is slightly lower, but it is more affordable at a price.
Design or quality
When buying glasses for everyday life, a lot of attention is paid to their appearance, however, if you choose glasses for a computer, customer reviews, of course, play an important role, but the quality of the accessory will be a higher priority choice. You can get acquainted with the appearance of these glasses by looking at their photos to make sure that they are all identical. They are comfortable to wear and carry mainly protective functions. They make safety glasses with diopters and with ordinary lenses. For PC users suffering from myopia or farsightedness, it is better to order special lenses for working on a computer with the right diopters.
What should be the frame
If you look at the reviews, glasses for the computer are now in demand, and we can conclude that the best option for the frame material can be good plastic or high-quality metal. When choosing an elegant metal frame, it is better to make sure that it is made with high quality, otherwise the coating of the frame will begin to wear off pretty quickly. This leads to the oxidation of the metal of the frame due to contact with the skin, which can cause an allergic reaction and irritation, as well as the appearance of dark spots on the skin at the place of contact with the metal, often users pay attention to this, leaving feedback.
Glasses for a computer have a rather high cost, which is due to the increased quality of all components, the quality of polishing, respect for proportions, and reliable mounts.
Glasses from Gunnar
Glasses for working at a computer Gunnar is a novelty that can really protect the user's eyes and prevent overvoltage during prolonged use. These safety glasses can really protect your eyesight from the harmful effects of the monitor. For office workers, safety glasses for the Gunnar computer will be indispensable, reviews say that the OFFICE collection is the best solution for such purposes. If a child is fond of computer games, then a series of game protective glasses for gamers Gunnar will help to significantly reduce the load on his eyes, while maintaining normal vision. The assortment also includes Gunnar Gaming series of goggles with a wide variety of frame shapes that have won positive reviews. Glasses for a computer, or rather lenses, are made of an exclusive material with anti-reflective coating and an improved geometric shape. They are made for use at a specific focal length, a special coating is designed to work with LCD and TFT monitors and various tablet options, as well as for working in rooms with fluorescent lamps. The lenses are equipped with optical antireflection filters developed on the basis of GUNNAR i-AMP technology.
The use of yellow color and an antireflection coating in lenses was the best solution to the issue of increasing the contrast of the perceived image from the monitor and significantly reduced the effect of bright lighting on the vision used in offices.
Real protection for computer glasses
The opinion of most oculists is unambiguous - such glasses really relieve fatigue, prevent the occurrence of headaches associated with the eyes, and prevent visual impairment. It must be remembered that you will not get rid of all eye ailments by buying glasses. Of course, there will be protection from the computer and user reviews, but computer glasses only reduce the strain on the eyes and make the work behind the monitor more comfortable and safe, but they cannot save from impaired vision if the rules for caring for your health are violated .
Monitoring of the state of vision, interruptions in work
In addition to using protective accessories, it is necessary to constantly monitor the state of your vision, periodically giving your visual organs a rest. The invisible flickering of the screen is quite tiring for the perception of the eye when viewing pictures on modern monitors. It is advisable to take a break from work, use gymnastics for the eyes, relax, even if you have glasses for the computer. Reviews say that the most effective way to relax is to have a healthy sleep. If you can’t fall asleep, you can try to relax, leaning back in the chair and closing your eyes with your hands, having stayed in this state for at least a minute.
We must not forget about the correct calibration of the monitor. The color scheme should be realistic and comfortable for the eye, which also reduces the load on the visual organs.
Prevention methods
The best computer glasses can not completely protect the eyes from the harmful effects that occur during daily prolonged work at the computer. That is, let your eyes rest, and do not rely only on glasses for the computer.
The reviews of doctors that can be found at many specialized forums tell that ophthalmologists recommend the following rules to prevent the development of CVD:
- You need to work at a computer in a well-lit room.
- The location of the monitor is min 50-60 cm from the eyes.
- Interruptions in work after every half hour of working with a computer are required.
During the break, you need to do light exercises for the eyes:
- The maximum rotation of the eyes to the left, then to the right, up, down.
- The rotation of the eyes in a circle, first in one direction, then in the opposite.
- Eyes tightly closed for 5 seconds, then open wide. The procedure is repeated several times.
- Fast blinking for 2 minutes. This exercise will moisturize your eyes and prevent drying out.
- The direction of view into the distance. This relieves tension from the eyes.
- The eyes are closed, and the eyelids are massaged in a circular motion of the fingers.
Subject to these simple rules, the eyes will always be healthy.