The problem of reducing visual acuity in our age of computer technology is particularly acute. PCs, laptops, tablets and other modern achievements are undoubtedly useful and necessary, but they are the main cause of eye fatigue and visual impairment.
How much time does a person spend daily at the computer? The answers may be different, but it is perhaps difficult to find at least one who would not use modern technology at all. The vast majority of people spend every day from several tens of minutes to several hours working at a computer, playing games, communicating on social networks, watching their favorite TV shows, etc. And this is a significant strain on the eyes. Everyone knows about this, but they continue to spoil their eyesight, forgetting not only to do special exercises to relieve tension, but even not observing the recommended breaks in work.
Why is my vision getting worse?
- Excessive strain on the eyes. Prolonged exposure to bright sunlight on the organs of vision; daily work without interruption at the computer; reading in poor light - all this leads to overloads that are extremely harmful to the retina. neglect of the elementarythe rules of visual hygiene ultimately ends in failure.
- Lack of training for the muscles involved in focusing the gaze. We are talking about the ciliary muscles, the contraction of which affects the curvature of the lens. If a person stares at a computer monitor screen, at a book page or at a TV screen for a long time, these muscles practically do not work. And in our body, elements that do not perform their functions for a long time eventually atrophy. Reduced strength and endurance of the ciliary muscles leads to a decrease in visual acuity.
- Destruction of visual pigment. The retinal cells responsible for the perception of visual information and the formation of a signal for the centers of the brain contain a special substance rhodopsin, which is extremely important for the normal functioning of the eyes. Under conditions of vitamin A deficiency, as well as with age, the visual pigment breaks down, which leads to visual impairment.
- Circulation problems. For example, atherosclerosis of the vessels that feed the retina often causes a drop in visual acuity. Another disease in which the vessels of the eyes are affected is diabetes mellitus and its complication such as retinopathy (pathological changes in the walls of retinal vessels, as a result of which trophism is disturbed and retinal cells begin to experience ischemia).
- Dry eyes. Insufficient functioning of the lacrimal glands leads to the fact that the eyes dry out, and this is bad for visual acuity.
- Deterioration of eye function can be a symptom of the disease. Examples can serve not only pathologies of the organs of vision (cataract,glaucoma, keratitis), but also some other diseases (for example, diabetes mellitus, hyperthyroidism, pituitary adenoma).
What to do?
Are there effective methods for preventing visual acuity loss or correcting if the latter did happen?
Everyone knows about eye gymnastics, but for some reason not everyone does it. But these simple exercises are a very effective means of relieving fatigue during visual overload.
Points are already a method of correction. For prevention, no one wears them, it is not necessary and even harmful. Wearing glasses in itself gradually reduces visual acuity, but for those who already have poor vision, there is simply no other way out than the constant use of glasses.
However, glasses for vision correction (perforated glasses) are now gaining more and more popularity. Unlike ordinary ones, they do not contribute to a drop in vision when they are constantly worn; act mainly as a means of prevention, not correction.
What are training glasses and how do they work?
Perforated glasses look like this: glass lenses are replaced by dark plates with many small holes. The principle of their operation is based on the principle of diaphragming, that is, many focused beams of light fall on the retina through these holes, which significantly increases the clarity of the image.
Perforated training glasses increase visual acuity and help relieve tension from the muscles involved inaccommodation.
Pros and cons
Perforated glasses improve vision only temporarily. Their action is based on the iris effect described above, but after stopping the use of glasses, vision problems return again. So, despite the assurances of advertising, training glasses are not a remedy. They are good, first of all, for prevention, since their regular use helps to prevent a further drop in visual acuity.
It is very convenient that even persons with absolutely normal vision can wear such glasses as a simulator to relieve fatigue. Perforated glasses are completely safe and do not aggravate vision problems, unlike regular corrective glasses.
The duration of their use is limited by the instructions, but you can still wear them longer if you wish. The lack of harm from their use allows you to sometimes break the rules. Although, of course, in most cases, few people do it. The plates in place of the lenses significantly reduce the amount of sunlight falling on the retina, so it is uncomfortable to wear these glasses for a long time, especially in low light.
Perforation glasses require several days to adapt. At first, there is a feeling of a barrier before the eyes, discomfort due to a decrease in illumination. But with regular use of glasses, all these effects quickly disappear.
How to wear training glasses?
Despite the relative safety, perforated glasses are not suitable for everyone. Evenfor them there is a list of contraindications:
- Glaucoma.
- Retinal pathology.
- Progressive myopia.
- Nystagmus.
In addition, it is also important to wear perforated training glasses correctly. The instruction clearly advises to use them no more than half an hour a day. This is more than enough time to rest the eyes and restore their performance.
Light level is also very important if you wear perforated glasses. The instruction does not recommend using them with a lack of sunlight, since the glasses themselves have a darkening effect. If this rule is neglected, there is a risk of tiring the eyes. After all, the lack of lighting for them is a serious burden.
What do patients say about exercise glasses?
Opinions about this method of preventing vision problems differ, but positive ones still prevail. Many who have used perforated glasses leave reviews about them like this:
- Vision stopped deteriorating.
- Eye fatigue decreased.
- It became possible to do without corrective glasses at home. After all, simulators can be used when watching TV programs or working at a computer, without once again resorting to ordinary glasses, although they are good for correcting vision, but still unsafe when worn for a long time.
Some talk about the inefficiency of perforated glasses. Like, visionimproves only when wearing them, and then returns to the previous state. But from the point of view of the purpose of these glasses, there is no contradiction here. Training glasses do not cure, their main task is to stabilize vision at the level that is currently available, and to prevent further deterioration. Those who talk about inefficiency do not seem to understand exactly what perforated training glasses do. The reviews of these people indicate that they either did not read the instructions, or they were misled. Yes, advertising sometimes likes to endow these glasses with healing properties, but this is not entirely true.
What do the doctors say?
Often, ophthalmologists recommend their patients to wear perforated training glasses. Reviews of doctors about the latter, as a rule, are positive. Of course, no doctor considers these glasses as a remedy, since they improve vision only temporarily, and this effect is unstable. However, perforated glasses have proven to be effective as a preventive measure for more serious visual impairments.
It is only important to follow the instructions. Although the glasses are positioned as completely harmless, the list of contraindications clearly indicates that they can still harm if used ineptly.
Side effects
Some people have reported headaches, dizziness, nausea and eye pain after wearing perforated glasses.
Why is it possible for all these unpleasant sensations to arise? Most likely, in thisIn this case, the glasses were worn for too long, possibly in poor lighting conditions. Or maybe those who were affected by the glasses so badly bought a fake and not an original product.
Use of training glasses in accordance with the recommendations (you can read about them above) usually does not lead to such effects.
A few words in conclusion
Vision is a very important component of a comfortable existence, which is why eye he alth should be treated very carefully. After all, it is always easier to destroy than to restore. Lost visual acuity to return, as a rule, is very difficult. So take care of your eyes. Don't forget to give them a rest from time to time, and don't be lazy to do regular exercises to relieve tension.
