Why, from a scientific point of view, should one closely examine and study surrounding objects through tiny pinholes... It turns out that this simple method can significantly improve vision. In other words, a seemingly useless action is necessary for effective training of the eye muscles.
As is known, visual impairment develops due to the action of many different factors, including the occurrence of serious diseases, the influence of hereditary preconditions, etc.
Sometimes vision weakens due to a careless attitude towards one's own health. Myopia and farsightedness can and should be corrected!
Glasses or appropriate lenses with diopters are recommended as a training unit. In addition, vision correction glasses have the same effect.
Find out why floaters appear before your eyes and how to treat these unpleasant symptoms.
What epicanthus is, its symptoms and treatment methods, can be found in this article.
Operating principle
If you wear training glasses, the light rays will penetrate only through the central optical zone, that is, the scattering of light on the retina will be significantly reduced. The image will be double but clear. Due to the work of the ciliary muscle of the eye, the curvature of the lens will change, and the split image will merge into one.
Since now the ciliary muscle does not have to constantly tense, the muscle fibers will rest. At the same time, the eyes get tired much less, visual acuity increases, and performance increases. Also, glasses with holes train the eyes so that the muscles do not atrophy. With regular use, the aging of the lens slows down and cellular metabolism improves.
Some models of pinhole glasses have a cutout at the bottom of the plastic lens. As a result, the eye is illuminated by rays of scattered light, but the light scattering on the pupil does not increase. This helps improve microcirculation, and in case of myopia, it allows you to see normally up close without taking off your glasses.
“Glasses n-nada?” or “why are ready-made Chinese glasses with diopters harmful”?
Many people (especially older people, especially given the impatience of Russians) are tempted to buy ready-made eyeglasses (usually made in China) at a mall or mini-optics in a supermarket.
I asked medical optics expert Irina Shevich to tell Habr readers what this could mean. Glasses are medical products, but ready-made glasses cannot be said to be as accurate as those “at the pharmacy.” This is a “mass crowd”, with all the ensuing consequences.
All parameters in Chinese glasses are “floating”. You think you are buying +3.0, but there may be more or less - depending on your luck. Or no luck
The saleswoman at the kiosk explains to customers: “These are “universal” glasses, with “floating centers” 62-66.” If you check your glasses with a diopter, you can see that they are up to 70 - 72 mm.
An optician is not a clothing store, and glasses, with average data, are not a T-shirt of any size that can be tightened with a belt.
By the way, ready-made glasses, not only Chinese ones, do not take into account that a person may have one eye closer and the other further from the center of the bridge of the nose. One is higher, the other is lower. Symmetrical faces are practically not found in nature. The total distance of 64 mm consists of, for example, monocular 31/33 or 33.5/30.5.
As a result of incorrect centering of the lenses, the visual axis of the eye does not coincide with the optical axis of the lens, and then the person’s gaze enters the zone of aberrations (distortions). They are larger, the higher the optical power of the glasses, and the further from the center of the lens.
People wearing incorrectly assembled glasses lower, raise or tilt their heads to “look at” the optical center of the lens.
The eye makes a “setting” movement, unnatural motor tension occurs, which can develop into heterophoria (hidden strabismus). A person can only be saved by refusing to constantly wear such glasses, and hidden strabismus will arise for him for another reason - often because he does not use correction at all.
The purpose of glasses is to shift the focus of the image to the retina, but ready-made glasses do not correct astigmatism. The image “doubles”, because Instead of a point, the astigmatic eye builds two foci, two lines. Houses, trees, car dimensions, instead of clear contours, have shadows and blurry outlines. The internal eye muscle, responsible for clear vision, overstrains, causing microfluctuations. This can cause metabolic disorders in muscle fibers and contribute to the development of retinal pathology and other eye diseases.
As for the lens material in finished glasses, as a rule, it is the simplest and rather fragile optical plastic, with a cheap coating, or even without it at all. As a result, glasses transmit ultraviolet radiation that is harmful to the eyes, and additional stray reflections and scratches form on the surface of the lens.
A few videos on the topic
Have you seen magnifying glasses in Pyaterochka stores?
If your glasses are broken or forgotten at home, a magnifying glass will make it possible to read labels on products. Ready-made glasses are the same tool for temporary use - for the period while a person waits to receive glasses made to order, especially for him. I thank Irina Shevich, director of the Opti-Class Institute for Advanced Studies and Professional Retraining, for preparing the material.
If you have an interest in this topic (those who have not yet undergone ReLEx SMILE laser vision correction and have not gotten rid of glasses), write in the comments what questions regarding eyeglass correction interest you, and we will try to prepare relevant posts.
Indications for use
Training glasses to improve vision can be useful for:
- Asthenopia;
- Myopia;
- Spasm of accommodation;
- Hypermetropia;
- Photophobia;
- Presbyopia.
These glasses are also suitable for preventive use. They are especially effective for people with increased visual stress, whose work involves computers, documents, and transport management. It is recommended to use training glasses also if there is a hereditary predisposition to various visual anomalies, including refractive error. Since perforated glasses provide good protection from bright sunlight, they can be worn instead of regular sunglasses.
With increased fatigue of the optical system, these glasses help relieve tension and other unpleasant symptoms.
General information
Perforation glasses, as they are also called, do not require any effort or special time for the procedure. They are recommended to be worn when doing normal things around the house (for example, reading a newspaper or watching your favorite channel on TV).
A variety of perforation glasses suggest the presence of cylindrical or conical holes. In the meantime, you need to try out all sorts of glasses options before you understand which shape is best suited for training.
As for the frames for corrective glasses, they can be different: metal and plastic. There is also the concept of frame belonging to age and gender (men's, women's or children's frames).
Children's glasses for vision correction have no design differences from adults; all differences come down only to the size of the frame.
Rules for using training glasses
There are several basic recommendations that will help make the use of training glasses more comfortable:
- At the beginning of training, the field of view may change somewhat, and the perception of objects will become unusual. This phenomenon is temporary and goes away after a period of adaptation.
- Start with 5-15 minutes of using glasses three to four times a day. Then increase this interval to 1.5-2 hours.
- The duration of treatment is approximately a year (150-300 hours of active use).
- After the treatment period, you need to gradually reduce the time of sessions.
- If you start treatment with exercise glasses, it is important to do the exercises regularly. Otherwise, their effectiveness will be very low.
Glasses are simulators, like gymnastics for the eyes
It is a misconception that eye simulators are a cure. They are recommended both for the prevention of eye diseases and for the treatment of various visual disorders. They strengthen the eye muscles, preventing vision from deteriorating, and are used for eye exercises. In addition, such simulators allow the eyes to rest after prolonged stress.
When choosing glasses, you need to consider the main points:
- Distance between eyes. Like regular corrective glasses, exercise glasses must meet this parameter;
- Glasses should only be purchased at an optician, with product certificates;
- It is important to remember that high-quality glasses and exercise equipment should not be cheap. The best manufacturers of glasses: Switzerland, Germany, Japan.
- No need to skimp on frames. After all, good glasses should completely cover the field of vision and fit tightly on the head;
- It is best to create custom glasses rather than buy ready-made ones. This way you can take into account all the necessary parameters and wishes;
- If your eyes don’t get tired while wearing glasses, it means they were chosen correctly. Otherwise, glasses may cause discomfort associated with redness of the eyes, burning and some other triggered factors.
And if you combine all the comprehensive eye exercises, advice and prescriptions from an ophthalmologist, as well as correctly selected glasses, then a positive result in restoring or strengthening your vision is recommended.
Recommendations for use:
- Farsightedness and myopia;
- Eye strain due to work;
- Senile vision;
- Asthenopia;
- Strabismus;
- Keratitis;
- Photophobia.
Preventive purposes of use
It is recommended to use training glasses during work that strains the eyes - reading books and newspapers, at the computer, TV, etc.
Wearing glasses relieves eyes from fatigue and fatigue after a long visual load in different categories of people. Children with a hereditary history of poor vision should receive preventive eye care in the form of wearing glasses. If your eyes get very tired, then glasses should be worn for 20-30 minutes a day.
Instructions for using perforation glasses. A set of exercises for vision training.
Exercises are best done during the day, in good lighting. First you need to get used to the perforation picture. This can be done through watching TV or reading a book. When the image becomes the same as with regular glasses, you can begin a set of exercises.
Attention! Perforation glasses should be worn for up to 2 hours a day. It is prohibited to use them while driving a car or walking.
There are a lot of different opinions and reviews regarding such vision simulators. One thing is certain: perforated glasses will not make your vision worse, and they certainly will not ruin it. Try to use them in the prevention or correction of poor vision and you will certainly see good results!
Special exercises
The following exercises will help make gymnastics with training glasses most effective:
- First you need to relax by closing your eyes for 7-10 seconds. This must be repeated after each exercise.
- Attach a small picture (about a square centimeter) to the glass and move 25-30cm away from the window. Next, focus your gaze on it for 4-5 seconds, then shift the focus to infinity for 2-3 seconds. Repeat the exercise 6-8 times.
- To relax your eyes, you need to close your eyes tightly 8-10 times and then open your eyes.
- The extraocular muscles can be stimulated by rotating the eyeballs first in one direction and then in the other. Repeat the exercise 6-8 times.
- Focusing your gaze on the tip of your finger, you need to gradually bring it closer to your nose by 5-7 cm or until the image begins to double, and then return it to its original position. The action is repeated 6-8 times.
- Move your hand away from your face as much as possible and focus your gaze on your finger for 6-8 seconds. Next, close one eye for 3-5 seconds, then the other for the same time. Five approaches are enough for this exercise.
- You need to watch your palm, which moves in front of your face to the right and left. Repeat the exercise 8-10 times.
- At the end of the complex, you need to take off your glasses and start blinking quickly for a minute. Additionally, you can perform a finger massage of the eyes through closed eyelids.
Please note that the information about this device is for informational purposes only. Our ophthalmology center has no relation to the manufacturers of the device and does not sell it!
Contraindications
As for the existing contraindications for wearing corrective glasses, they are very conditional. In particular, these include the patient’s infancy (early age), previous mental disorders, individual intolerance to spectacle frames, etc.
Reviews of perforation glasses trainers
Reviews about glasses for vision correction are mostly positive, coupled with the main treatment, such correction gives good results.
Is heterochromia a disease or a simple color anomaly of the eye shell? Find out by reading the article.
The dangers of iridocyclitis, the reasons for its development and methods of treatment are described in detail in this publication:
Video for reflection on the benefits of perforation glasses:
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