home All hormones How to wear glasses for regular wear. What happens if you choose the wrong glasses? What are the disadvantages of wearing glasses?

How to wear glasses for regular wear. What happens if you choose the wrong glasses? What are the disadvantages of wearing glasses?

A person who had seen well throughout his life suddenly noticed at the age of 40 that he had to move a book or newspaper further and further from his eyes. A situation arose in which he needed glasses. There is nothing surprising. With age, the lens of the eye becomes less elastic, accommodation works worse, which is why there is a need for reading glasses. But distance vision remains excellent. Myopic people do not need reading glasses; on the contrary, they wear glasses for distance reading.

Do you need reading glasses?

There is an opinion that the later you use reading glasses, the better it is for your eyes. This is not true. Sometimes people try to make out some text until their eyes ache and cause headaches. And when you put on glasses (even with a small number of diopters), you are amazed at the clarity of the text or image. Life literally takes on a new meaning.

A couple of years pass and the need arises for stronger reading glasses. Here everything is also natural - it continues over the years. However, this process will not continue indefinitely.

When should you wear glasses?

In the vast majority of cases, every year you have to strengthen your glasses by half a diopter. At the age of approximately 60 years, the situation stabilizes at +3.0 or +3.5 diopters. After this, most likely, you will no longer have to change your reading glasses. If at this age visual acuity in the distance and near begins to change, this will be a symptom of other eye problems (for example, early cataracts).

A nearsighted patient can say goodbye to reading glasses after 45-50 years, but distance glasses will remain the same.

Glasses are an optical device that consists of a frame and spectacle lenses. They are designed to improve vision in case of any optical imperfections of the eyes and are the most common and affordable means for vision correction.

Glasses should be selected by an ophthalmologist who will correctly measure the distance between the centers of the pupils and recommend the material from which the lenses will be made.

Indications for wearing glasses

(myopia) is a vision defect in which a person sees well near, but poorly sees at a distance, because the image of objects does not fall on the retina, but is focused in front of it. When viewing distant objects, a blurred and unclear image is projected on the retina.
Farsightedness (hyperopia) is a defect in which a person sees well at a distance, but poorly sees near, since the image of objects is focused behind the retina.
- a defect that is associated with a violation of the shape of the cornea or lens, as a result of which the ability to see clearly is lost. Astigmatism is characterized by decreased vision, seeing objects forked and sometimes curved, headaches, and rapid eye fatigue during work.
Presbyopia is senile (age-related) farsightedness.
Aniseikonia is a defect in which images of the same object have different sizes on the retina of the left and right eyes. In this case, difficulties are observed when reading, the perception of the relationship of objects in space is disrupted, and visual fatigue increases.
Heterophoria (hidden strabismus) is the tendency of the eyeballs to deviate from parallel axes.

Contraindications to wearing glasses- some mental illnesses, infancy, individual intolerance to glasses.

26-10-2011, 05:54

Description

In a myopic eye, after refraction in its optical system and with complete rest of accommodation, only diverging rays are collected on the retina, that is, emanating from some point located in front of the eye at a finite distance. This distance from the front main point of the eye to the further point of clear vision will characterize the degree of convergence of rays incident in the eye, and, consequently, the degree of myopia.

Parallel rays after refraction in the system of the myopic eye are collected in front of the retina, i.e., the main focus of the optical system of the myopic eye does not coincide with the retina. The eye will be disproportionate, ametropic, since the length of the optical axis of the eye and the length of the focal length do not correspond to each other: either the refractive apparatus has a shorter focal length than the length of the eye (refractive myopia), or the length of the eye is longer than necessary for a given refractive optical power eye system (axial myopia). There are two more types of myopia: myopia of mixed origin, in which the refractive error is caused by a deviation in both the axis length and the refractive power of the eye, and combination myopia, which depends on a peculiar combination of essentially normal elements of the optical apparatus of the eye. At high degrees of myopia (above 6.0 D), axial myopia prevails, and at weak and moderate degrees, combination myopia prevails.

According to Gullstrand dioptric calculation, the degree of myopia is equal to the reciprocal of the distance from the front main point to the further point of clear vision, and is indicated by a fraction having one in the numerator, and the distance to the further point, expressed in meters or centimeters, in the denominator.

M = 1/-R D,

where M is the degree of myopic refraction, R is the distance to the further point of clear vision (since this distance is measured from the eye to the left, it will have a minus sign).

The expression for a negative lens that corrects the degree of myopia also coincides with this expression, since the denominator will be the rear focal length of the lens, and the rear main focus is in front (to the left) of the rear main plane of the lens. For example, at a distance to the further point of clear vision of -50 cm (or -0.5 m), myopia will be equal to

If the further point of clear vision is in front of the eye at a distance of -200 cm (or -2 m), then myopia will be

At the same time, the myopia-correcting lens in the first case will be 2.0 D with a focal length of -50 cm, and in the second case the lens will be 0.5 D with a focal length of 200 cm. The focal length of the correcting lens and the distance to the further clear point views are identical.

In Fig. Figure 27 shows a diagram of a myopic eye. Parallel rays connect at the main focus of the system F, which is located in front of the retina, and a light scattering circle a1b1 is obtained on the retina.

On the retina at point M, rays emanating from point R, located at a finite distance in front of the eye, can connect. These rays are indicated by a dashed line.

Diagnosis of myopia is based on the fact that vision improves from placing concave glasses on the eye, while convex glasses worsen. The degree of myopia is determined by a negative lens, which makes parallel rays after refraction diverge from a further point of clear vision located in front of the eye and coinciding with the main focus of the lens.

In Fig. 28 presented myopia correction scheme. The dashed line denotes those rays that, upon refraction in the eye, are connected on the retina at point M. The further point R is located in front of the eye and coincides with the main focus of the negative lens AB placed in front of the eye, which gives the parallel rays a direction coinciding with the direction of the rays emanating from the further points of clear vision, and it is precisely these rays that connect on the retina of the myopic eye.

When determining the degree of myopia, the task is to find a negative lens whose rear focus would coincide with the further point of clear vision of the myopic eye. Without correction, a myopic eye cannot have full visual acuity; it is always reduced, and the more, the higher the degree of myopia.

In practice, when selecting glass, proceed as follows. To determine the degree of myopia, negative lenses are placed in front of the patient's eye. If vision improves, this will indicate the presence of myopia; start with weak lenses and gradually move on to stronger ones. Visual acuity gradually improves until, finally, with a certain lens, the highest visual acuity is obtained. If this is achieved with the help of several lenses, then they stop at the weakest one. With stronger glasses we cause hypermetropia, and the eye immediately begins to accommodate in order to better see the signs of the table. Therefore, the degree of myopia is characterized by the weakest negative lens, with which the highest visual acuity is obtained.

After selecting the weakest negative lens for each eye separately, it is recommended to check vision further binocularly, while reducing the glasses for each eye by 0.25 D or 0.5 D; if the patient remains the same highest visual acuity with weaker glasses, then myopia should be considered equal to the degree of these glasses. This is explained by the presence of a slight spasm of accommodation. In distance vision, with parallel visual lines, it is easier to relax accommodation.

Example. 1. Visual acuity in both eyes is 0.3; negative lenses improve vision: with a -1.5 and -2.0 D lens, visual acuity is 1.0. What is the refraction and where is the further point of clear vision?

There is myopia of 1.5 D, since the weakest glass expresses the degree of myopia. The further point of clear vision is in front of the eye at a distance of -66 cm. R = 1/-1.5 = -0.66 m (- 66 cm). The degree of convergence of divergent rays incident on the eye is 100/-66= - 1.5 D.

Example 2. Visual acuity without correction is 0.04. Negative lenses improve vision. Lenses - 6.0, -6.5 D and -7.0 D give visual acuity of 1.0. What is the patient’s refraction and where is the further point of clear vision?

There is myopia of 6.0 D, since the weakest glass expresses the degree of myopia. The further point of clear vision is in front of the eye at a distance of -16 cm; R = 1/-6 = - 0.16 m (-16 cm).

Since with myopia the further point of clear vision is located at a relatively short distance in front of the eye, this distance can be easily determined by a simple measurement with a centimeter ruler. Inviting the patient to read font No. 5 or No. 6 of the table for near Golovin - Sivtsev at an extremely far distance from the eye, measure this distance with a ruler.

M = 100/-22 = - 4.5 D.

This method is simple and convenient, but not accurate, because the patient, when reading fonts at close range, somewhat strains accommodation, which increases refraction, and there is always a danger of identifying a higher myopia than it actually is. Therefore, its use is permissible only for the purpose of approximate determination of the degree of myopia.

In fact, the degree of myopia never corresponds exactly to the refraction of the lens by which it is determined, since for this purpose the lens is not placed on the eye itself, but at some distance from it, i.e. there is a discrepancy between the lens and the ametropia of the eye, as already mentioned in consideration of hypermetropia.

The issue of correcting myopia is much more complex and responsible, than the question of correcting hypermetropia, firstly, because myopia, as a rule, progresses; secondly, because myopia, especially of medium and high degrees, very often causes a sharp decrease in visual acuity; thirdly, because myopia, especially of a high degree, is often complicated by changes in the fundus of the eye, which require not only correction, but also treatment. These changes in the fundus have long established a view of such myopia not as a simple refractive error, but as a disease. Therefore, correction of myopia in many cases is not a purely optical measure, but also a therapeutic one. Due to all that has been said, with myopia one has to think about prevention aimed at delaying the progression of myopia and preventing its complications, which very often lead to a sharp decrease in vision, and sometimes to blindness.

The purpose of this manual is to present mainly the issues of correction of ametropia, therefore, when solving our problems, we will touch upon the prevention of myopia only as necessary, and therapeutic measures will not be included in our task at all, since they relate to other departments of ophthalmology.

The need for complete correction of myopia is now generally accepted.

Only a few doctors of the old school stand for incomplete correction, who believe that accommodation and convergence increase intraocular pressure and thereby contribute to the further progression of myopia. But this assumption has not yet been proven by anyone. One must think that it is incorrect. Ophthalmologists who adhere to these old views prescribe incomplete correction (3.0 - 4.0 D less), both for distance and near, and do not insist on constantly wearing glasses.

There is now much more evidence that complete correction is the main intervention to treat myopia and delay its progression.

Full correction improves visual acuity and thus improves working conditions. Full correction makes it possible to read at a greater distance, therefore, to strain convergence less and to use accommodation more (approximately the same way that convergence and accommodation are used in emmetropia).

Sometimes complete correction must be approached carefully, prescribing stronger lenses gradually, or even refuse full correction, taking into account a number of circumstances.

First of all, it is necessary to take into account the inability of a person with myopic refraction to use accommodation. This is especially noted at an older age, if the patient had never worn glasses at the time of the first correction. If such a patient is equipped with glasses that completely correct myopia, then. he will not be able to use accommodation, as with emmetropia, even for a very short time. Such a person is accustomed to strongly converging without glasses and almost not accommodating at all, or, in any case, using accommodation much less than a person with emmetropic refraction with the same convergence. Armed with glasses that correct myopia, he must accommodate even slight convergence. The patient will not be able to cope with work at close range with the new relationship between convergence and accommodation. The need for additional tension in the ciliary muscle is unusual for him, and sometimes completely impossible. In youth and with good accommodation, the eye can still cope with such unusual work for it, but at an older age the patient will quickly get tired and, in the end, refuse to work with glasses, considering the glasses given to him to be incorrectly selected and harmful, unless, of course, , the doctor did not warn me when prescribing glasses that I need to get used to the glasses. In such cases, it is necessary, therefore, either to accustom patients to gradually get used to glasses prescribed for constant wearing, or to prescribe weaker glasses for near and gradually move on to glasses that completely correct myopia.

Negative lenses high refractive power, due to their distortion of the perspective and shape of objects, cause very unpleasant sensations in patients who begin to wear such glasses. In an eye equipped with such glasses, the images of objects on the retina are reduced; the location of these images changes; In connection with this, the outward projection of images also changes. The result is an incorrect assessment of the distance of objects from the eye, their size and shape, straight lines seem arched, patients walk unsteadily, the floor seems uneven, the steps of the stairs seem higher or lower. All this affects the psyche of patients, causing dizziness, headaches, nausea, and sometimes vomiting.

With longer use of glasses, all these phenomena disappear; previously acquired ideas about the size, shape and distances of objects help to again see everything around the same with and without glasses. But some patients with high myopia still cannot cope with all these phenomena and get used to glasses. You have to take this into account and sometimes prescribe weaker lenses. Some patients have to be given special advice to quickly get used to the prescribed glasses. For example, it is recommended to wear glasses only in your room at first; when the patient gets used to wearing glasses in the room, allow him to learn to walk up the stairs, first in the house in which he lives; further allow you to go out and walk only along your familiar street, and then in unfamiliar places. If the patient persistently wears glasses, taking them off only when he gets tired, and, after resting, putting them on again, then, of course, he will eventually get used to it.

When correcting a myopic eye, it is not always possible to obtain full visual acuity; sometimes, despite the most careful correction, even good visual acuity is not achieved; often corrected visual acuity ranges from 0.3 to 0.1, and sometimes lower. In these cases, it is still possible to prescribe lenses that completely correct myopia for distance, but for near, full correction cannot be prescribed even to young people. Such a patient, in order to better examine small objects, will involuntarily bring them very close to the eyes, trying to achieve a larger image on the retina. These patients have to be prescribed significantly weaker lenses for near than for distance, by 3.0; 4.0 or 5.0 D is weaker, depending on the degree of myopia and guided by the subjective testimony of the patient.

Myopia is quite often complicated by a spasm of accommodation. In this case, the degree of myopia increases according to the strain of accommodation, and there is always a fear, during a subjective study, to determine a higher degree of myopia. Therefore, especially when choosing glasses for the first time to correct myopia in childhood and youth, atropine should be widely used, prescribing it at the slightest suspicion of a spasm of accommodation.

The spasm of accommodation in such cases is caused by increased convergence: strongly converging, the myopic eye also intensively accommodates,

Spasms can complicate myopia of all degrees - from low to high. Accommodation spasm is mostly observed in nervous, impressionable, young people, who, due to their profession, have to work close to small objects for a long time and without intervals. These people tolerate prolonged stress of accommodation very poorly. Their eyes become red, watery, and sensitive to light; at the same time, they are not able to continue work for a long time and are forced to interrupt it often. Such symptoms of irritation appear periodically and are more common, of course, at a young age, especially with highly progressive myopia. The administration of atropine in these cases is absolutely necessary for complete rest of accommodation and convergence and for the correct selection of glasses after the spasm of accommodation has been relieved.

In addition to a spasm of accommodation, myopia is complicated by attacks of muscular asthenopia, in which patients complain of a feeling of pressure and tension in the eyes, while objects merge and become unclear; typical complaints about the inability to draw visual lines to close objects. Working close becomes impossible.

The cause of muscular asthenopia lies in the weakness of the internal rectus muscles. Since the attacks of muscular asthenopia are very similar to the attacks of accommodative asthenopia, the presence of muscle failure must be established by the Graefe method or the Meddox method (a small scale for studying heterophoria).

Before we begin to outline the tasks for correcting myopia, it remains to say a few words about the prevention of myopia progression and the prevention of myopia complications.

1. The work time of a patient with high myopia should be limited: reading, writing, drawing, etc. should be no more than 4 hours a day, with breaks for rest. Consequently, the choice of a profession with the least load on visual strain at close range is of great importance for such a patient.

2. Working conditions for a patient with high myopia should be the most favorable. If the act of vision occurs under unfavorable conditions (poor lighting, very small work, poor myopia correction, etc.), then this can cause the development of severe complications.

3. Heavy physical work, heavy physical exercise (gymnastics on apparatus, various sports, such as playing football, running, jumping, wrestling, etc.) can cause complications of myopia, which the patient should be warned about*.

4. Adaptation disorders observed in high degrees of myopia, due to dysfunction of the pigment epithelium, force such persons to be advised to be careful when moving and work in daylight.

5. Patients should avoid conditions that cause a rush of blood to the head, such as washing in a hot bath, washing hair with hot water, drinking alcohol, exercising in a hot room, wearing tight collars, tilting the head sharply during exercise, and constipation.

The five points outlined are a kind of commandments for people with progressive myopia.

Until recently, activities carried out to prevent the progression of myopia in students were mainly reduced to correction with spherical glasses, to the creation of proper hygienic conditions during intense visual work, which indirectly reduced the need for accommodation and convergence stress, vitaminization and tissue therapy.

In 1957, doctor E.V. Utekhina and optical-mechanical engineer Yu.A. Utekhin proposed using for this purpose, in addition to existing measures, special bifocal spheroprismatic glasses, which significantly reduce the necessary accommodation and convergence when working near. The glasses are designed in such a way that they allow the use of spheroprismatic elements near, and for distance vision - ordinary glass for the correction of myopia. A new method for preventing the progression of myopia appears to be theoretically justified. However, it needs further clinical validation.

Problem 11. A 15-year-old student complains of poor distance vision. I noticed deterioration in my vision about 5 years ago. She didn't wear glasses.

In both eyes, visual acuity is 0.06, with myopia correction at 3.5 D, visual acuity is 1.0; skiascopically: in both eyes myopia is 3.0 D. The closest point of clear vision with glass is 3.0 D - at a distance of 12 cm.

In cases where there are no special indications for long-term atropinization, you can successfully use its substitute - a 4% solution of homatropine, which is instilled into the patient’s eyes once in the doctor’s office. An hour after instillation, the patient is examined; by that time the pupils dilate and complete paralysis of accommodation occurs, which disappears after 24 hours.

A single dose of 4% homatropine was instilled into both eyes and the patient was asked to sit in the waiting room for one hour. An hour later, the patient was examined with the pupils dilated as much as possible. Visual acuity 0.03; with myopia correction of 3.0 D visual acuity 1.0; skiascopically: myopia 3.0 D in both eyes.

Diagnosis. Myopia of 3.0 D in both eyes.

We prescribe glasses - full correction for constant wear.

We write out the recipe:

Glasses for constant wear:

right eye -3.0 D
left eye -3.0 D
Dp. = 52 mm

Problem 12. A girl, 7 years old, has very poor vision in the distance and near, reads by leaning very close to the book. She didn't wear glasses. Visual acuity of each eye is 0.01, with myopia correction 8.0 D, visual acuity 0.3; left eye: visual acuity 0.01, with myopia correction 7.0 D, visual acuity 0.4.

On the fundus there is a cone on the temporal side of the optic nerve nipple, half the diameter of the nipple wide, with piles of pigment along the edge of the cone.

Atropinization is prescribed for 5 days.

When examined under atropine with maximally dilated pupils: visual acuity of the right eye is 0.01, with myopia correction 6.0 D, visual acuity 0.3; visual acuity of the left eye is 0.02, with myopia correction 5.0 D, visual acuity is 0.4.

After additional atropinization for 5 days, the same data were obtained. Skiascopy: on the right eye M 6.0 D, on the left eye M 5.0 D.

Complete correction of myopia is prescribed (glasses for constant wear). Astigmatism of 0.5 D cannot be corrected, since cylindrical glasses do not improve visual acuity. It is recommended to read and write, keeping the work as far away from the eye as possible, study in good lighting, and take breaks from studying every 40-45 minutes. A note is given to the school so that the girl is seated in the first desk and exempted from physical education lessons.

A prescription is written:

Glasses for constant wear:

right eye - 6.0 D
left eye -5.0 D
Dp. = 52 mm

Problem 13. The patient, 16 years old, has very poor vision in the distance and near. I never wore glasses.

Visual acuity in both eyes 0.04; M 15.0 D, visual acuity with correction 0.4.

Some ophthalmologists say that vision problems are the price we have to pay to be civilized and educated... But these words are so far from the truth! Vision problems can be solved quite simply without expensive surgeries and glasses/lenses. I can help you solve this problem!

Skiascopically:

Close up, the small print No. 5 of the Golovin-Sivtsev table is read at a distance of 6 cm from the eyes, while one eye sharply deviates outward; When installed at a distance, the strabismus is not noticeable. There are large circular cones in the fundus, depigmentation and mottling in the macular area.

Diagnosis. High myopia, degenerative changes in the macular area and insufficiency of the internal rectus muscles.

The patient categorically refused atropinization.

A complete correction cannot be prescribed, since it will be very difficult for the patient to get used to the strong glasses. On the other hand, due to the presence of divergent strabismus, it is necessary to give glasses close to complete correction. The latter is necessary in order to increase visual acuity, make it possible to read, write and work at a distance close to normal (about 20-25 cm) and thereby facilitate convergence; the presence of strabismus indicates that the internal rectus muscles can no longer cope with work at close range due to their insufficiency. We settled on -12.0 D lenses, in which a visual acuity of 0.3 is achieved and it is possible to freely read font No. 6 at a distance of 25 cm. Font No. 5 is read with difficulty at a distance of 18 cm. The patient feels well in these glasses. We point out that you need to get used to the glasses gradually.

We write out the recipe:

Glasses for constant wear:

right eye -12.0 D
left eye -12.0 D
Dp. = 64 mm

Problem 14. A 13-year-old girl complains that she sees very poorly in the distance and near; cannot study, especially in the evenings, letters merge; the eyes water, turn red, and the head begins to hurt. After rest, he can study again, but soon the letters begin to merge again. The mother adds that her daughter is leaning very close to the book. I never wore glasses.

The girl has mild photophobia, the edges of the eyelids are thickened, covered with crusts and scales, there are few eyelashes, the conjunctiva of the eyelids and transitional folds is hyperemic. Visual acuity in both eyes is 0.14; M 4.5 D with correction visual acuity 1.0; reads small print at a distance of 7 cm equally with both eyes; When the font is moved 8-9 cm away from the eye, the girl cannot read anything. There is a spasm of accommodation; skiascopically: hyperopia of 0.5 D after the girl sat in a dark room for 1 hour.

When re-examining visual acuity according to the tables, myopia was again detected at 4.5 D, corrected visual acuity was 1.0.

Diagnosis. Spasm of accommodation, false myopia, chronic blepharoconjunctivitis, accommodative asthenopia.

Atropinization is prescribed for 2 weeks, school attendance and all activities are prohibited. Atropine is prescribed not only to detect all hypermetropia, but also to treat spasm. .

A week later, the pupils are dilated to their maximum: visual acuity in both eyes is 0.2; with -0.5 D visual acuity 0.7; skiascopically: H 0.5 D in both eyes.

After 12 days: visual acuity in both eyes 0.2; H 1.0 D, corrected visual acuity 0.7; Skiascopic: H 1.0 D.

After 14 days: visual acuity 0.3; H 1.0 D, corrected visual acuity 0.8; Skiascopic: H 1.0 D.

Glasses are prescribed for constant wear + 1.0 D on both eyes, i.e. complete correction of hypermetropia. It is recommended to start wearing glasses immediately after atropinization, with wide pupils.

A prescription is written:

Glasses for constant wear:

right eye +1.0 D
left eye + 1.0 D
Dp. = 54 mm

General treatment, vitamins, and fish oil are prescribed. Referred to a neurologist.

After a week, the patient with glasses sees well, but still cannot read. We suggest gradually starting to read and write at a distance of 25-30 cm. Corrected visual acuity H 1.0 D = 1.0.

After another week, the patient already sees well both far and near, reads at a distance of 25 cm without fatigue: the headaches have stopped: the symptoms of blepharoconjunctivitis have almost disappeared.

This case is very interesting, since such a large spasm of accommodation is rare, and cases of false myopia of such a large degree are not frequent.

Problem 15. Turner, 25 years old, has poor distance vision. It is also inconvenient to work; you have to lean very close to the machine. I never wore glasses.

Visual acuity of the right eye 0.08; M 4.5 D, visual acuity with correction 1.0; visual acuity of the left eye 0.06; M 5.5 D, visual acuity with correction 1.0; skiascopically: on the right eye myopia is 4.0 D, on the left eye it is 5.0 D.

The closest point of clear vision with myopia correction is at a distance of 13 cm, i.e., corresponds to the patient’s age. The volume of accommodation is calculated by the formula:

A = Р-R=100/-13-0 = -7.5 D.

On the fundus there are temporal cones.

Diagnosis. Moderate myopia.

Glasses that completely correct myopia are prescribed for constant wear. From the formula for calculating the volume of accommodation it is clear that the patient controls his accommodation like an emmetrope.

A prescription is written:

Glasses for constant wear:

right eye -4.0 D
left eye -5.0 D
Dp. = 62 mm

Problem 16. A 16-year-old student at a construction college wears 4.0 D glasses, which he was prescribed 2 years ago. He sees well in them, but gets tired and cannot wear them for a long time: it is very difficult to read and draw in them.

Visual acuity of the right eye 0.1; M 3.0 D, visual acuity with correction 1.2; visual acuity of the left eye 0.17; M 2.5 D; visual acuity with correction 1.2. With glasses (-4.0 D) visual acuity is also 1.2.

The closest point of clear vision with corrective lenses is 8 cm for both eyes. With glasses (-4.0 D), the closest point of clear vision is 14 cm, i.e., like a 28-year-old; skiascopically: myopia on the right eye is 2.5 D, on the left eye - 2.0 D. With glasses -4.0 D. The patient has hypercorrection. The glasses are too strong because myopia is overcorrected.

Atropinization is prescribed for 5 days. After 5 days, with maximally dilated pupils, myopia in the right eye was 2.5 D, in the left eye 2.0 D. Corrected visual acuity was 1.2.

A prescription is written:

Glasses for constant wear:

right eye -2.5 D
left eye - 2.0 D
Dp. = 60 mm

Problem 17. The director of a printing house, 49 years old, complains of very poor eyesight. Wears glasses -18.0 D, with them he sees poorly both in the distance and near. Myopic since childhood: I started wearing glasses at the age of 10, gradually increasing them. She has been wearing her last glasses for 7 years.

Visual acuity of the right eye 0.01; c -28.0 D; visual acuity 0.12; visual acuity of the left eye 0.02; s - 26.0 D; visual acuity 0.14; skiascopically: right eye M 30.0 D, left eye M 28.0 D. There are extensive circular cones in the fundus, multiple atrophic chorioretinal lesions in the macular area and in the circumference of the optic nerve nipples.

Diagnosis. High myopia, central myopic chorioretinitis in both eyes.

We try stronger glasses for distance: the right eye with - 24.0 D gives visual acuity 0.1; the left eye with - 22.0 D gives visual acuity 0.12. According to the patient, he sees much better with these glasses; In his glasses, the top line of the Golovin-Sivtseva table is not clear.

For near vision we prescribe weaker lenses.

Taking into account the age and subjective indications of the patient, we write out the following prescriptions:

Near glasses:

right eye - 20.0 D
left eye - 18.0 D
Dp. = 64 mm

Distance glasses:

right eye - 24.0 D
left eye -22.0 D
Dp. = 66 mm

Problem 18. The artist, 59 years old, has distance glasses - 3.5 D, which he has been wearing for a very long time. Reads well without glasses, but needs glasses to work in his specialty; you need to see the model, and then transfer your gaze to the canvas, i.e., a distance of 40 -

50 cm. Asks to choose glasses in which you can work without taking them off.

Visual acuity in both eyes 0.05; M 4.5 D, visual acuity with correction 1.0; skiascopically: myopia - 4.0 D.

Diagnosis. Myopia.

It is advisable for the artist to wear bifocal glasses for his work. The top of the glass can be given -4.0 D; in the lower one, to work at a distance of 40 - 50 cm, weaker glass is needed. 50 cm corresponds to the distance of the further point of clear vision of an eye with myopia of 2.0 D, therefore, our patient needs a lens - 2.0 D.

We write out the recipe:

The patient does not need reading glasses.

Problem 19. A 26-year-old accountant complains of poor distance and near vision. Never wore glasses. Visual acuity of the right eye is 0.03, with myopia correction 14.0 D visual acuity 0.5; visual acuity of the left eye 0.04, with myopia correction 12.0 D, visual acuity 0.6; skiascopically: on the right eye myopia is 13.0 D, on the left eye 11.0 D.

Fundus: extensive circular posterior staphylomas and depigmentation in the yellow area, spots.

The closest point of clear vision when examined with lens correction is 13.0 D on the right eye at a distance of 20 cm; without glasses reads font No. 5 of the Golovin-Sivtsev tables at a distance of 10 cm.

Since the patient has never been examined for atropinization and complains of fatigue when working at close range, atropinization is prescribed.

Diagnosis. High myopia, accommodation spasm.

Repeated examination after 3 days, with maximally dilated pupils: visual acuity of the right eye 0.02, with myopia correction 10.0 D, visual acuity 0.5, with aperture 0.7; in the left eye, visual acuity is 0.02, with myopia correction 9.0 D; visual acuity 0.5 with aperture 0.7; skiascopically: on the right eye myopia is 10.0 D, on the left eye myopia is 9.0 D.

Atropine is prescribed for another 2 days. In the third study, the same data were obtained skiasscopically and subjectively as in the previous study.

We write out the recipe:

Glasses for constant wear:

right eye -10.0 D
left eye - 9.0 D
Dp. = 64 mm

The patient is warned that one must get used to the glasses gradually; at first it will be uncomfortable to walk in them, all objects will seem smaller, and it will also be difficult to read and write with glasses; If your eyes get tired, you need to take off your glasses and rest, and then put them back on. The book should be held at a distance of approximately 25 cm. You should also not read while lying down. Start wearing glasses when your pupils are dilated.

After 3 days the patient was examined: the glasses were made correctly. The patient says that it is really difficult for him to walk down the street, he trips, and the floor seems uneven.

A repeat examination a month later revealed that the patient had become accustomed to the glasses. There are no side effects.

Article from the book: .

Decreased visual acuity is not only a pressing medical, but also a social problem. Today, a huge number of young and middle-aged people suffer from myopia - a vision defect in which a person has poor distance vision and cannot clearly distinguish objects at a distance. With myopia, refraction, the refractive power of the eye, is impaired. To clearly see an object at a far distance, a person has to squint. Therefore, in ophthalmology there is another term for this visual defect - myopia (in Greek “myops” - “squinting”). The most common way to eliminate this pathology of eye refraction is to wear glasses for myopia.

Why does myopia occur?

In normal vision, rays of light emanating from distant objects pass through the eye's optical system and converge on the light-receiving membrane of the retina. With myopia, the rays are projected in front of the retina, scattered and hit the retina in an unfocused form. As a result, the image turns out blurry, blurry, unclear. This visual defect develops due to the excessively strong refractive power of the cornea and lens, or due to an increase in the length of the eyeball, which takes on an ellipsoidal shape. To correct the refractive error of the optical system of the eye due to myopia, ophthalmologists select appropriate glasses for the person.

Features of choosing glasses for myopia

The refractive power of glasses is expressed in diopters. If myopia develops, minus (negative) diopters are selected. With an initial degree of myopia (up to -3.0 diopters), glasses can completely restore visual acuity. However, quite often eye doctors recommend wearing them only when necessary. Many ophthalmologists believe that constantly wearing glasses weakens the eye muscles, so myopia will progress quickly.

If the degree of myopia is expressed in the range of 3.0 - 6.0 minus diopters, it is no longer possible to do without glasses. In the middle phase of refractive error, ophthalmologists try to accurately select the diopters of glasses. Wearing them constantly allows you to completely correct your vision and save a person from many problems that arise in everyday life.

For high myopia (above -6.0 diopters), doctors recommend wearing glasses one diopter less than the diagnosed visual impairment. Among ophthalmologists, this approach to selecting glasses is called vision correction based on tolerance. The fact is that strong negative glasses significantly reduce the size of visible objects, which leads to a violation of spatial perception. In this case, 100% vision correction is not achieved, but the person gets rid of increased eye fatigue.

In addition, when selecting corrective glasses for any degree of myopia, the distance between the centers of the pupils of the eyes should be taken into account. When wearing glasses with an incorrectly selected center distance, your eyes can quickly become tired and dizziness may often occur.

Appearance of glasses

It is well known that when looking at a person, glasses are the first thing that catches your eye. Therefore, from an aesthetic point of view, you should approach the choice of frames and lenses for glasses responsibly. In particular, for a person with a round face, it is best to choose square glasses, and for people with elongated facial features and a long nose, the most preferable choice is round glasses.

Much depends on the material from which the glasses are made. The plastic frame is not dangerous to drop, but if you step on it or accidentally sit on it, it breaks in half. The metal frame is flexible and bends easily. On the one hand, this is good (the frame takes the shape of the face), on the other hand, it is bad: it is not always possible to correctly straighten a damaged frame and give it its original shape. It is better to choose plastic or polycarbonate lenses, since glass lenses are heavy: the glasses will slide off your face.

With the current level of industrial production, purchasing good glasses for myopia is not difficult. The main thing: the correct selection of diopters and comfort when wearing glasses!

Nearsightedness or myopia deprives a person of the ability to clearly see objects located at a great distance from him. Vision problems interfere with work, study and do not allow you to lead a normal lifestyle in general. Therefore, to solve them, experts recommend a number of methods, the most common of which is wearing glasses for myopia, which not only improve image clarity, but also slow down the progression of the disease. But to achieve such an effect, you need to take into account a lot of nuances, starting with how to choose them correctly and ending with how best to care for them.

To find out what kind of glasses patients with myopia should wear, it’s first worth understanding what exactly this disease is. Myopia is one of the most common visual impairments, in which a person sees clearly only what is close to him. But as soon as you look a little further, the picture immediately begins to blur.

For what reason does such a problem arise? When a person with good vision looks into the distance, the lens of the eye becomes flat due to muscle relaxation. If you need to look at something up close, it changes shape, refracting light more strongly and providing a clear image. With myopia, the lens is constantly curved, so objects located far from the viewer do not come into focus. Patients with myopia not only cannot see something well in the distance, but also often suffer from headaches due to eye fatigue.

The cause of the problem may be a disruption in the functioning of the muscles responsible for changing the shape of the lens. Such patients require special exercises and drug therapy to treat myopia. If the curvature of the lens is associated with the anatomical features of the eyeball, it is possible to slow down the development of the disease and improve vision only with the help of properly selected glasses or contact lenses.

Myopia - is it a “minus” or a “plus”

What kind of glasses do people with this disease need to see the world around them without interference? These questions are asked by anyone who has had to deal with the problem of decreased vision. The answer is clear: myopia is always a “minus”, which means that only concave lenses with a diverging effect can correct the situation.

The degree of curvature of the lens, which is responsible for image clarity, is measured in diopters. To see far, you need to make it flat, that is, reduce the number of diopters. Therefore, for myopia, you need “minus” glasses, and for farsightedness, “plus” glasses, which add diopters and, accordingly, the curvature of the lens.

When you can't do without glasses

How can you tell if a person needs to wear glasses? Many people, even realizing that their vision has become much worse, for many reasons do not dare to go to the doctor to get a prescription for their purchase. Only a specialist can assess visual acuity and determine whether it needs correction, which means that if you stop seeing well, you can’t just go to the nearest optician and buy the first model you like.

At the early stage of myopia (up to -1 diopter), there is no particular need for glasses - the situation can be corrected simply by reducing the load on vision. This involves taking extra rest during the day and using special eye drops to relax muscle spasms at night. However, in cases where myopia begins to cause significant discomfort, it will not be possible to slow down the rate of its development without glasses.

Types of glasses

For patients with myopia, there are 3 types of glasses:

Corrective. Full-fledged “minus” models that provide maximum picture clarity.
Preventive. Participate in eye training through special exercises.
For working at a computer. Thanks to the protective coating, they protect the eyes from harmful radiation and reduce stress on the muscles.

You can purchase any of these products only as prescribed by a doctor - otherwise there is a risk of accelerating the development of the disease.

Glasses for different stages of myopia

Selecting glasses for myopia is a rather complicated process. Having determined the degree of myopia separately for each eye, the doctor first offers the patient weak lenses, and then gradually moves on to stronger values. The procedure continues until maximum image clarity is achieved. If you need to make a choice between two pairs of glasses in which the patient feels comfortable, the decision is always made in favor of the weaker ones. But with a high degree of myopia, the doctor may recommend 2 pairs of lenses at once - separately for far and near distances.

In addition, there are special bifocal lenses, which are often prescribed to children and adults with the initial stage of the disease, when objects are clearly visible close up, but blurred at a distance. The bifocal lens is conventionally divided into 2 parts: the upper “minus” one for working with distant objects and the lower one, without diopters, in order to clearly see the image directly in front of you. Thus, if a child wears bifocal contact lenses for myopia at school, he does not have to take off and put on his glasses every time he needs to look from the board to his notebook.

How to choose glasses for myopia

To make the right choice, lenses and frames are evaluated based on a variety of criteria. Lenses are usually distinguished by:

material - thin and light plastic with a small number of diopters or glass, thicker and heavier, but with more pronounced optical properties;
coating - protective, anti-glare, for working at a computer, etc.;
shape - flat-concave, convex-concave and biconcave.

When choosing frames, it is important to decide on the material from which it will be made. It could be:

plastic: lightweight, poorly responsive to temperature changes, comfortable, but rather fragile;
metal: reliable and wear-resistant, but heavier;
“two in one” option: metal frame around the glasses and plastic arms.

What happens if you choose the wrong lenses for your glasses?

The mistakes made affect both the vision and the general well-being of a person: the eyes are constantly tired, headaches, dizziness and nausea bother them, performance decreases and the degree of myopia increases. Immediately after purchase, these symptoms should not cause serious concern - you just need to wait until your eyes adapt. But in any case, consulting a doctor on this matter will not hurt - he will tell you how to get used to glasses, or point out mistakes and help you choose a new model.

Do I need to wear glasses all the time?

Doctors are often asked: do glasses damage your vision if you wear them without taking them off? The answer to this question is individual for each patient and depends on the degree of neglect of the disease. At the initial stage, they are needed only during visual stress, for example, when watching TV or working at the computer. But this rule ceases to apply - for such patients the answer to the question of whether it is necessary to constantly wear glasses for myopia can only be in the affirmative.

To avoid excessive tension of the eye muscles, in case of a significant decrease in visual acuity, it is recommended to use 2 models simultaneously - for constant wear and, for example, for reading or writing.

Glasses or lenses

What is better to buy for myopia - lenses or glasses? There is no universal answer to this question, because the needs of each patient are individual. Both products have their pros and cons that are important to know before purchasing. For example, glasses are easy to use - they are easy to put on and take off, they do not require a special solution for storage, etc. They do not come into direct contact with the eyes, which means there is less risk of infection with them. Glasses are suitable for people of any age and are relatively inexpensive. But even with them you cannot do without difficulties: for example, how to wear glasses while playing sports without the risk of breaking them, or what to do in rainy weather, when you cannot see anything behind the drops of water flowing down the glass?

When deciding which is better - glasses or contact lenses, it is important to understand that the use of the latter first of all requires strict adherence to hygiene rules. Lenses are easily lost, deformed and torn, but even without this, they need to be replaced periodically, which requires additional costs. And girls have to use special cosmetics for makeup that do not cause irritation. Although for many they will be a real godsend - the lenses are invisible to others, do not spoil the appearance and provide one hundred percent vision to patients with myopia above 10 diopters.

What rules must be followed

Patients with vision problems are often interested in how to properly wear glasses for myopia so that they are beneficial. Experts recommend:

when purchasing, rely only on the doctor’s instructions;
wear glasses so that the gap between the glasses and the eyes does not exceed 12 mm;
do not use other people’s products, even if it seems that they are suitable in all respects;
Avoid rubbing the bridge of the nose and other discomfort caused by uncomfortable frames.

It is also important to properly care for your glasses: periodically wipe the lenses with a special solution and a microfiber cloth, avoid scratches on the glasses and use a storage case.

An important question: how to get used to new glasses so that they stop causing inconvenience? Firstly, come to terms with the fact that even a perfectly chosen model will take at least a week to adapt to, wearing it for only a few hours a day and always taking it off when working with nearby objects. And, of course, getting used to glasses for myopia will be easier if you immediately purchase a stylish and comfortable frame that will please the eye and become a worthy adornment for its owner.

Currently, vision problems have acquired unprecedented proportions. The issue of visual impairment is increasingly affecting children and adolescents; more and more people are turning to doctors with myopia. The most popular method of vision correction remains spectacle correction due to its accessibility and safety. We will tell you how to wear glasses correctly for myopia in this article.

Features of vision with myopia

Myopia (myopia) is a refractive error in which the projection of visible images is focused in front of the retina, which does not allow the brain to correctly process the information received. Myopia is one of the most common visual impairments, and its complications cause visual disability.

Myopia cannot be called a disease in the truest sense of the word. This is an anomaly in which the length of the eye and the optical system do not match each other. Myopia usually begins to develop in schoolchildren due to increased load on the visual system.

Correction of myopia is mandatory, especially in children, when the visual system is still developing, and any deviations can last a lifetime. Vision with myopia can be corrected in different ways: glasses, contact lenses, laser correction, surgical methods. Proper correction helps change the focal length inside the eye and improve vision to normal values.

Undoubtedly, there are many modern methods of vision correction for myopia, but glasses remain the safest and most affordable. Lenses in glasses for nearsighted people have a concave shape and have a scattering effect. This lens refracts light in such a way as to focus the image of the object being viewed onto the retina, even in the presence of disturbances.

Physiological causes of myopia:

pathological changes in the sclera;
dysfunction of the muscular system of the eye;
elongation of the eyeball;
increased intraocular pressure.

To understand what glasses to use for myopia, you should determine the nature of the impairment. In the case of myopia, the image is focused in front of the retina, so the person has difficulty seeing into the distance. To restore normal vision, you need to move the focus exactly to the retina, which can be done with concave lenses, the strength of which is indicated by a minus sign.

Glasses or contact lenses

When choosing between glasses and contact lenses, you need to understand that these correction methods are not suitable for everyone. If vision has weakened by only a few diopters, constant wearing of lenses is not required. In situations where high visual acuity is needed, it is easier to use glasses (driving, going to the cinema).

For myopia greater than 10 diopters, contact lenses are more preferable. In such cases, glasses cannot provide one hundred percent vision and create distortions, so lenses become a real salvation. In addition, when you constantly wear glasses, they rub the bridge of your nose and ears.

Contact lenses do not change a person's appearance. In addition, they create a single optical system with the eye - without defects and reduction of fields of view. The perception of sizes and distances remains normal, and peripheral vision is maintained.

Glasses remain the easiest way to improve vision for myopia. They can be bought quickly and at an affordable price in any optical store. In addition, the glasses are absolutely safe and do not cause complications.

Disadvantages of spectacle correction for myopia:

distortion of the peripheral zones of the visual field;
inability to provide a complete optical system;
presence of distortions;
changing the shape of objects;
difficulties in determining distance;
unaesthetic appearance;
inconvenience of use (restrictions on physical activity, risk of damage);
scratches on the lenses.

There are special glasses with plus lenses. This is an unconventional method of treating myopia, based on eliminating the main factor in the development of myopia – spasm of accommodation. Some experts believe that by wearing glasses with weak lenses, you can force your eyes to fight refractive errors on their own.

How to choose the right glasses for vision correction

Only an ophthalmologist can examine a person’s visual system and select suitable glasses for him. This is very important because wearing the wrong glasses will cause your vision to deteriorate faster.

You can be tested for myopia and choose glasses in one consultation. The ophthalmologist determines the degree of vision loss by assessing the vision in each eye separately. To calculate the required degree of correction, negative lenses from a special set are used. Additionally, the doctor evaluates binocular vision (the ability to see with both eyes at once). It is possible to administer medications to test vision in the absence of muscle tension.

Glasses and frames

Spectacle correction of myopia is preferable for mild to moderate degrees of myopia. As a rule, ophthalmologists prescribe incomplete correction in order to preserve the accommodation reserve. People with myopia of -3 diopters are prescribed several pairs of glasses or bifocal models to provide vision correction at all distances. The lenses in single vision glasses and bifocal glasses are different.

Features of single vision lenses for myopia correction:

the optical power is the same for the entire area of the lens;
lenses that correct myopia are thin in the center and thicker at the periphery;
Traditionally, glasses for myopia correction are made of mineral glass, which have significant weight;
modern models of glasses are made of lightweight plastic that is resistant to damage;
The most preferred are polycarbonate lenses (light, durable, stable, and have high refractive indices).

Bifocals provide both near and distance vision. The upper half of the glass in such lenses is intended to correct myopia, and the lower half helps to see near. The difference in optical power between the zones is several diopters, but due to the sharp transition, many people suffer from discomfort.

If you are nearsighted, you can use glasses with multifocal lenses. They, like bifocals, have several optical zones. Their distinctive feature is the presence of a smooth transition between zones, which reduces discomfort when using them. While bifocal lenses provide near and distance vision, multifocal lenses also help you see at intermediate distances. These glasses make it possible to correct both nearsightedness and farsightedness at once.

The most popular are glasses with plastic and metal frames. The type of frame that suits you will depend on the degree of myopia. In the prescription, the doctor indicates the required number of diopters: the stronger the myopia, the thicker the edges of the lenses and, accordingly, the edges of the frame should be.

The plastic frame can accommodate the lenses needed to correct high degrees of myopia. This frame covers the edges of the lens and ensures a tight fit around the perimeter. In addition, the plastic is lightweight, which makes the glasses optimal in weight.

Metal frames are preferable for mild to moderate myopia, when thinner lenses are needed. This is due to the weight of the metal frame, which will cause severe discomfort when combined with thick lenses. People with low myopia can use rimless glasses.

Computer glasses for myopia

Computer glasses are prescribed to prevent the progression of disorders. They help prevent eye strain when working in front of a monitor for a long time, and glasses with a special coating also protect against radiation. An interference filter absorbs light in the violet-blue spectrum, but allows enough sunlight to pass through.

Computer glasses can have refractive power and can be used to correct myopia. In this case, the lenses should be two diopters weaker than the lenses for permanent correction. The optical characteristics of such glasses help reduce eye strain when working with modern gadgets.

In what mode to wear glasses

When selecting glasses, the doctor chooses those that will provide complete correction, that is, one hundred percent vision. Minus glasses improve distance vision, so near work can often be done without using them. It is believed that correction is not so important when performing work that requires clear vision at a distance of up to 40 cm.

Glasses for myopia are worn not only to improve visual acuity. The correction helps prevent overstrain of the eyeball muscles and worsening myopia. Children and adolescents generally tolerate myopia correction well. At this age, glasses are used that improve vision exclusively up to 100%.

There is an opinion that when wearing glasses from childhood, the eyes learn to function independently. However, this is a myth: a person’s eyes get used to seeing well with glasses, and when they take them off, they get used to seeing poorly again.

Many ophthalmologists do not prescribe glasses for patients with first degree myopia (up to -3 diopters) who do not suffer from visual discomfort. A slight deviation does not have a significant impact on the quality of vision, but the risk of myopia progression usually remains.

Moderate myopia (3-6 diopters) requires constant wearing of glasses. With such indicators, a person begins to see poorly not only in the distance, but also near objects. Often, separate glasses are prescribed for working at close range, or it is recommended to use bifocal glasses with two zones.

In cases of high myopia, permanent vision correction is recommended. It is noteworthy that with severe myopia, complete correction is often intolerant, and doctors prescribe glasses according to the patient’s feelings. Such glasses do not provide 100% vision, but only enough to make the person comfortable. Complete correction in this case will cause fatigue and progression of the disorder. It is recommended to have several models of glasses for different occasions (reading, for permanent use, with a protective filter).

How to understand that glasses are not suitable

The most obvious sign that the glasses are not fitted correctly is a blurry image. However, most often the error in refractive power is so small that the patient does not experience significant discomfort. Even a slight deviation in refractive power can cause eye strain, headaches and even nausea. The eyes get tired faster, symptoms of overstrain are observed more often and more severely.

However, you need to be able to distinguish between adaptation to glasses and discomfort from inappropriate correction. Problems with getting used to spectacle correction often arise when myopia is combined with astigmatism. Getting used to glasses can be complicated when correcting anisometry. This is a condition in which the eyes have different optical powers, and accordingly, the lenses provide correction in different ways.

Patients also have difficulty getting used to glasses because they create optical distortions and change the perception of distance. Sometimes the cause of discomfort is the incorrect installation of lenses in the frame.

If you were prescribed glasses for the first time, you need to wait a few days and evaluate the changes. When first trying to correct myopia, many people think that objects have become smaller and are located farther than they really are. If you experience headaches and blurred vision within a week, you should return to your doctor to determine the cause of the discomfort. This is important, because incorrectly selected glasses will aggravate myopia.

Where to buy glasses for vision correction

You can buy glasses for myopia with or without a prescription from a doctor. However, it is not recommended to choose glasses only based on subjective feelings, because even correctly selected lenses need to get used to. When trying on glasses that fit the dioptres for the first time, people experience discomfort and see distortions.

You can order glasses at an optician. Some ophthalmologists directly cooperate with optical salons, so you can place an order directly with the doctor. This option is advantageous if glasses need to be made according to individual parameters (for example, for anisometropia). People with primary symptoms may be offered ready-made glasses at an optician's office.

Ready-made glasses are made according to standards, so they are rarely completely suitable for correcting myopia. Sometimes such lenses are misaligned, which does not affect the correction effect, but can be dangerous for vision. While wearing it, the person will begin to experience symptoms of tension and fatigue.

It is not recommended to buy glasses at the market, on layouts and in other unverified places that do not provide licenses for their products. This is doubly risky: you can choose the wrong lenses and also buy dangerous glasses. Cheap glasses usually have low-quality frames, which cause allergies and irritation.

How to stabilize myopia

To prevent vision deterioration due to myopia, it is necessary to consult a doctor as soon as possible and begin correction. The main measure to prevent the progression of myopia is correct correction and regular monitoring of changes. Only correction helps reduce eye strain and stop the development of disorders.

Even when using glasses, it is necessary to observe the visual load regime. It is useful to do gymnastics to prevent overstrain of the visual system. Every 45-60 minutes of intense work you need to take a ten-minute break. It is also important to properly organize the workplace and adjust the lighting.

To preserve your vision, you need to watch your diet and posture. Patients with myopia are advised to play tennis and swim. Self-massage of the neck should be done regularly so that the visual system receives enough nutrients through blood circulation.

The best thing when choosing glasses to correct myopia is to trust a specialist. It is necessary to undergo a complete examination of the visual system and follow the instructions of the ophthalmologist to stop the progression of myopia and restore vision. You need to buy glasses from trusted institutions, checking the build quality and manufacturing materials.