okoplus.ua - Медичний центр "ОКО-ПЛЮС"

Conatct lenses: how to put in and remove

okoplus.ua — Wed, 20 Dec 2023 21:22:06 +0000

Contact lenses putting in

There are two ways to put in the lenses. Use the one, який є найбільш зручним для Вас.

Putting in lenses with one hand

Remove the right lens from the case.
Verify, so that the lens is not turned inside out and, if necessary, return it to the correct position. Put the lens on the pad of the index finger of the right hand.
Raising his head, without squinting your eyes to the side, pull back the lower eyelid with the middle finger of the same hand.
Lift your eyes up and carefully place the lens on the white of the eye below the pupil. Lower your eyes down to precisely shrink the lens.
Move your index finger away from the lens and gently release the retracted lower eyelid. Close your eyes for a short moment for that, so that the lens is located in the center of the pupil.
Повторити вищевказані операції з лівого лінзою.

Putting in lenses with two hands

Remove the right lens from the case.
Verify, so that the lens is not turned inside out and, if necessary, return it to the correct position.
With the middle finger of the left hand, pull the upper eyelid to the eyebrow.
Покласти лінзу на подушечку вказівного пальця правої руки і відтягнути нижню повіку середнім пальцем тієї ж руки.
Place the lens on the pupil with your index finger.
Holding the eyelids in the indicated position, lower the eyes down for precise shrinkage of the lens on the pupil. Carefully release the retracted eyelids.

Повторити вищевказані операції з лівою лінзою.

Lens removal

Lift the eyes up and pull the lower eyelid with the middle finger of the corresponding hand.
Place the pad of your index finger on the lower edge of the lens.
Move the lens from the pupil to the white of the eye. Обережно затиснути лінзу між великим і вказівним пальцями і зняти її з ока.

The post Conatct lenses: how to put in and remove first appeared on Medical centre "OKO-PLUS".

Proper lens care

okoplus.ua — Wed, 20 Dec 2023 21:05:55 +0000

PRELIMINARY PREPARATION

Prepare the materials, that are necessary for the lens care. Prepare a clean, smooth surface. When carrying out procedures above the sink, plug the drain with a plug. Wash and rinse your hands thoroughly. To avoid confusion, it is recommended to always start with a specific lens – for example the right lens.

Stage 1: LENSES CLEANING

Заповнити осередки футляра для зберігання лінз універсальним розчином.
Зняти лінзу з правого ока і покласти її на розкриту долоню руки.
Капнути на лінзу кілька крапель універсального розчину.
Вказівним пальцем акуратно розмазати розчин по обох поверхнях лінзи.

CLEANING лінз кожен раз після виймання з очей забезпечує зняття відкладень і нальотів з поверхонь лінз.

WASHING лінз забезпечує видалення знятих з поверхонь лінз відкладень і нальотів.

DISINFECTION of the lenses ensure the destruction of microorganisms, що викликають подразнення і запальні процеси.

Stage 2: LENSES WASHING

Після очищення лінз ретельно промити їх безперервним струменем чистого універсального розчину для зняття всіх забруднень.

Stage 3: DISINFECTION OF THE LENSES

Place the lens in the appropriate slot of the lens storage case.
Completely immerse the lens in the universal solution.
Wrap the cap and repeat the three procedures described above with the second lens.
Leave the lenses in the case overnight or at least, for 4 hours.
After the disinfection you can remove the lenses from the case and insert them into your eyes (it is not necessary to wash the lenses after the disinfection).
Then drain the solution and rinse the case with the clean solution. Screw on the lids. Футляр готовий для наступного використання.

Weekly enzymatic cleaning

Enzymatic cleaning serves to remove protein deposits and ensures the transparency of the lenses and ease of use.

Wash both cells of the lens storage case with a universal solution.
Fill both cells of the lens storage case with clean solution.
Dissolve one enzyme tablet in each cell .
Take both lenses out of your eyes, clean and rinse rhem as usual, and then put them in the corresponding cells of the case.
Completely immerse the lenses into the solution.
Screw on both lids, shake the case and soak the lenses in the solution for 5 minutes. Dirtier lenses require longer soaking, but no more than 2 hours.
Remove the lenses from the case, clean and rinse them with a universal solution, as you normally do when cleaning and washing them.
Empty the case from the remains of the solution and rinse it thoroughly with a clean solution.
Fill both cells of the case with clean solution.
Place the lenses in the case and disinfect them in the usual way. Після дезінфекції лінзи можна вставляти в очі.

The post Proper lens care first appeared on Medical centre "OKO-PLUS".

The structure of the eye

okoplus.ua — Wed, 20 Dec 2023 21:02:13 +0000

One does not see with their eyes, but with the help of the eyes, wherefrom the information is transmitted through the optic nerve, decussation, visual tracts to the certain areas of the occipital lobes of the cerebral cortex, where the picture of the world that we see, is formed. Всі ці органи і складають наш зоровий аналізатор або зорову систему.

Having two eyes makes our vision stereoscopic (forms a three-dimensional image). The right side of the retina of each eye transmits the "right side" of the image to the right side of the brain via the optic nerve, the left side of the retina acts similarly. Then two parts of the image – right and left – головний мозок з’єднує воєдино.

Since each eye perceives "its own" picture, when the joint movement of the right and left eye is disturbed, binocular vision may be impaired. Тобто у вас почне двоїтися в очах або ви будете одночасно бачити дві зовсім різні картинки.

The eye can be called a complex optical device. Its main task – to "transmit" the correct image to the optic nerve. Eye structures perform different functions:

an optical system, that projects the image;
a system, that perceives and "encodes" the received information for the brain;
a system, яка «обслуговує» життєзабезпечення.

Cornea – transparent shell, that covers the front of the eye. There are no blood vessels in it, it has great refractive power. It is part of the optical system of the eye. The cornea borders the opaque outer shell of the eye – склерою.

Front camera – this is the space between the cornea and the iris. Вона заповнена внутрішньоочною рідиною.

Iris – shaped like a circle with a hole inside (pupil). The iris consists of muscles, during contraction and relaxation of which the size of the pupil changes. It is part of the choroid of the eye. The iris is responsible for eye color (if it is blue – it means, it has few pigment cells, if it is brown – it means it has many pigment cells). It performs the same function, as the aperture in a photocamera, регулюючи світлопотік.

Pupil – a hole in the iris . Its dimensions usually depend on the level of illumination. The more light, тим менше зіниця.

The lens – "natural lens" of the eye. It is transparent, elastic – can change its shape, almost instantly "focusing", due to which a person can see well near, and far. Located in a capsule, it is held by a cilia strip. The lens, as well as the cornea, входить в оптичну систему ока.

Vitreous body – gel-like transparent substance, located in the back of the eye. The vitreous body supports the shape of the eyeball, participates in intraocular metabolism. Входить в оптичну систему ока.

Retina – consists of photoreceptors (they are sensitive to light) and nerve cells. Receptor cells, located in the retina, are divided into two types: cones and sticks. In these cells, that produce the enzyme rhodopsin, light energy is transformed (photons) into electrical energy of nervous tissue, тобто фотохімічна реакція.

The sticks have high light sensitivity and allow you to see in poor lighting conditions, they are also responsible for peripheral vision. Cones, vice versa, require more light for their work, but they are the ones that allow you to see small details (are responsible for central vision), make it possible to distinguish colors. The largest concentration of cones is in the central fossa (macules), which is responsible for the highest visual acuity. The retina is adjacent to the choroid, but not too thoroughly in many places. Саме тут вона і має тенденцію відшаровуватися при різних захворюваннях сітківки.

Sclera – opaque outer shell of the eyeball, which transforms in the front part of the eyeball into the transparent cornea. There are 6 oculomotor muscles attached to the sclera. У ній знаходиться невелика кількість нервових закінчень і судин.

Vascular membrane – lines the back part of the sclera, is adjacent to the retina, which it is closely related with . The choroid is responsible for the blood supply of intraocular structures. In case of the diseases of the retina, it is often involved in the pathological process. There are no nerve endings in the choroid, therefore, there is case of its desease, який зазвичай сигналізує про певні порушення зору.

Optic nerve – за допомогою зорового нерва сигнали від нервових закінчень передаються в головний мозок.

The post The structure of the eye first appeared on Medical centre "OKO-PLUS".

Glaucoma

okoplus.ua — Wed, 20 Dec 2023 15:38:19 +0000

The doctor said, that you have glaucoma. What's next?

What is glaucoma? Glaucoma – it is a chronic progressive eye disease. Glaucoma is manifested by an increase in intraocular pressure and, in the absence of treatment, can cause irreversible vision loss. Глаукома є провідною причиною сліпоти у всьому світі.

Why does glaucoma occur and what contributes to its appearance? It is still not known for sure, why does a person develop glaucoma. Meanwhile, a number of factors have been established, which increase the probability of disease development. They are called risk factors. One of the main factors is age. Glaucoma develops more often in older people 40 years, and the older the person, тим вищим є ризик захворювання.

Another risk factor is the presence of glaucoma in close relatives. in addition, is considered, that diseases of the vascular system contribute to the development of the disease: arterial hyper- or hypotension, vegetative dystonia, migraine etc. If you have several risk factors, ми наполегливо рекомендуємо вам звернутися до офтальмолога для консультації.

How glaucoma manifests itself? In most cases, glaucoma begins and progresses without symptoms. The patient does not feel any unpleasant sensations. At this stage, only an ophthalmologist can detect the initial signs of the disease by measuring the intraocular pressure and examining some eye structures. Symptoms appear over time, which bother the patient. The most important of them is the appearance of defects in the field of vision. At the same time, the violation appears, що деякі предмети начебто зникають із загального зорового поля.

Why should glaucoma be treated??

As already mentioned, Glaucoma is a chronic progressive disease. This means, that without treatment, the symptoms of this disease will continue to increase, and this process can end in complete loss of vision. in return, early appointment of the correct treatment can slow down the progression of glaucoma in the long term and preserve the patient's ability to work and quality of life. Це можливо лише за умови дотримання рекомендацій лікаря та відсутності перерв у лікуванні.

Fortunately, glaucoma almost does not limit the usual way of life. However, excessive physical exertion should be avoided, prolonged work in a head down position, а також уникати зловживання алкоголем і нікотином.

How glaucoma is treated?

Glaucoma treatment usually involves three main methods: drug treatment, laser treatment and surgery. Only a doctor can choose the optimal method and drugs in each specific case based on many factors. To achieve the best results, it is important to follow all the doctor's recommendations. При появі дефектів у полі зору деякі фрагменти можуть здатися втраченими.

Self-medication is not allowed. It is important to note, that no non-pharmacological methods, diets, nutritional supplements or exercise cannot replace medical or surgical treatment, which was prescribed by an ophthalmologist. Основним методом лікування є призначення очних крапель.

If your doctor has prescribed eye drops for you, they should be used regularly, without treatment interruptions. It is necessary to strictly follow the doctor's prescriptions, do not stop treatment on your own, оскільки кожна перерва в лікування може призвести до невиліковного погіршення зору.

In some cases, laser treatment is indicated. This is a procedure, which is performed almost painlessly and takes only a few minutes. In more complex cases or when the effect of eye drops or laser treatment is not sufficient, лікарі можуть призначити хірургічне втручання.

What is the criterion of successful treatment?

Glaucoma is a chronic progressive disease and at the moment, at the stage of development of modern medicine, its complete cure is impossible. Stopping the progression of the disease can be considered a successful result. This can be determined by, that the level of intraocular pressure remains within normal values, а дефекти поля зору не зростають.

The post Glaucoma first appeared on Medical centre "OKO-PLUS".

CVS or computer vision syndrome

okoplus.ua — Wed, 20 Dec 2023 15:35:40 +0000

Human vision, formed in the course of evolution, turned out to be poorly adapted to long-term visual work with computer images. Широке поширення комп’ютерів та розвиток цифрових технологій викликало цілий ряд скарг на здоров’я користувачів ПК, і найбільша їх кількість припадає на захворювання очей.

When working at a computer, a person may experience a number of unpleasant sensations, which received the name computer vision syndrome (computer vision syndrome). This term defines a set of complaints about the organs of vision, quick fatigue, pain in the region of cervical vertebrae in people, who spend a long time in front of the monitor. Moreover, the greatest load falls on the eyes, since by means of sight man receives 90% інформації.

Such complaints include a decrease in visual acuity, slow speed of refocusing from near objects to far ones, burning and feeling of sand in the eyes, pain in the eye sockets and forehead. These phenomena are united by the term "asthenopia" (lack of eyesight). These complaints are found in a significant percentage of users and depend both on the time of continuous work, as well as from her character. Reading information from the display is considered less burdensome, its introduction is more burdensome. The most general fatigue is caused by work in dialog mode and computer graphics. The reason for this condition is the peculiarity of the images on the monitor, when the letters, numbers and pictures do not consist of continuous lines, as on paper, and from separate points (pixels), in addition, they glow and flicker. These points do not have clear borders, so the marks and lines are less contrasty, than, let's say, в книзі.

Monitor manufacturers are actively working to create monitors that are safe for health. Thanks to their efforts and growing sanitary requirements, new monitors appear with a greater degree of protection and, accordingly, with less adverse effects on the eyes.
Can be considered established, what affects the PC user the most is intense visual work with the monitor and the lack of correction for existing visual anomalies.

How to deal with CVS? The recommendations of most doctors are reduced to limiting work at the computer, what, Unfortunately, іноді буває зовсім нездійсненним.

Controlled workplace lighting is a real way to combat visual fatigue, correct ergonomic principles of its equipment and optimal vision correction (correction of myopia or farsightedness taking into account the astigmatic component).

In addition to dioptric correction, a special coating of eyeglass lenses can play a significant role. If a person works under the lighting of ordinary incandescent lamps or natural lighting, then anti-reflective coating can be recommended to her. Thanks to it, the quality of lenses as a means of vision correction improves — the transmission of light increases, and they become practically invisible, and the user gets rid of reflections, that interfere. If the workplace is illuminated by fluorescent daylight lamps, then, in addition to anti-glare, it is advisable to use a coating, which blocks ultraviolet and short-wave blue part of the spectrum (blue filter). In the radiation spectrum of most daylight lamps used in offices, there is excess blue short-wave radiation, which has an increased ability to disperse. Blue light affects the eye's ability to focus, and lighting workplaces with similar fluorescent sources is the cause 30% vision complaints from PC users. Glasses with a similar filter improve the ability to distinguish colors, reduce the "pixelity" of the image on the monitor, make the image on the retina clearer and more contrasty, adjust the radiation spectrum of the monitor to the maximum spectral sensitivity of the eye photoreceptors, reduce the time to detect a useful signal, block the short-wave hard part of the spectrum, яка негативно впливає на стан оптичних середовищ ока.

For PC users, which use contact lenses for correction, another problem appears: the amount and nature of the visual load contribute to this, what a person, sitting in front of the monitor, blinks less often, as a result, the mucous membrane of the eye is less wetted by tear fluid, less moistening of the lens, less oxygen penetrates the cornea, there is a feeling of "dry eye". В цьому випадку для зволоження лінзи можна рекомендувати використання спеціальних зволожуючих крапель або штучної сльози.

You have not yet escaped from the monitor screen?
Of course, в сучасному житті без нього не обійтись і дотримуючись нехитрих правил можна уникнути подібних проблем.

The material was prepared with the assistance of the leading doctor of the Medical Center "Laboratory of Biomedical Sensory and Vision Correction "OKO-PLUS»
Панасенко Галини Михайлівни.

The post CVS or computer vision syndrome first appeared on Medical centre "OKO-PLUS".

Astigmatism

okoplus.ua — Wed, 20 Dec 2023 15:28:18 +0000

Astigmatism – this is a fairly common pathology of the refraction of the eye, associated with an irregular shape of the cornea or lens. The literal translation of the name of this disease from Greek means “inability of the eye to connect the rays to one point, that fall on him” (from the Greek word “stigmas” – point). As a result, a person sees the surrounding objects as distorted, blurred, and straight lines – зігнутими.

The cornea and lens of a normal, healthy eye have a smooth spherical surface. With astigmatism, their sphericity is disturbed, it has different curvature in different directions: denser in one direction and convex in another. So, that light rays, which pass through a deformed cornea or lens are focused on the retina at more than one point, and several at once. Therefore, the image is perceived by the eye indistinctly. Usually, astigmatism is combined with myopia (myopic astigmatism), or with farsightedness (hypermetropic astigmatism).

What types of astigmatism are there??

Like any disease, astigmatism of a weak degree can exist even in a normally functioning eye. А от сильні ступені астигматизму серйозно впливають на зір і усуваються за допомогою відповідних окулярів.

Astigmatism is farsighted, short-sighted and mixed: along one axis farsighted, on another – short sighted. At the same time, part of the light flux is concentrated to the retina of the eye, and part – за нею.

Who is prone to astigmatism?

Suffer from astigmatism as adults, and children come to us. The peculiarity of this disease is its genetic nature, that is, in most cases, astigmatism is inherited and congenital. There is also acquired astigmatism. It most often develops after injuries and surgical operations on the eyes due to gross cicatricial changes in the cornea.

How is astigmatism diagnosed??

In most cases, a person simply does not notice astigmatism of a weak degree. Seeing everything in a slightly blurred form is the norm for her and, she may not know about it, that in reality the image should be sharper. Most often, astigmatism manifests itself in the form of headaches, which occur when there is an increased load on the eyes while working at the computer or when reading. If you have a feeling after visual strain, double vision, then there is a high probability, що ви страждає від астигматизму.

How to get rid of astigmatism?

Glasses and contact lenses do not treat astigmatism, вони лише корегують зір.
Повністю позбавитись від астигматизму можна тільки за допомогою хірургічного втручання.

There are several types of operations with different methods to eliminate astigmatism:

Thermokeratocoagulation – is performed to correct far-sighted astigmatism. This is thermal cauterization of the peripheral zone of the cornea with a heated metal needle. When burning, the curvature of the cornea increases, which means, збільшується її заломлююча сила.
Radial keratotomy – used for myopia or mixed astigmatism. Це нанесення радіальних насічок на рогівку для ослаблення заломлення по посиленій осі.

But these methods already belong to the history of ophthalmic surgery. She came to replace them laser correction, яка дає можливість більш точно розрахувати кінцевий результат.

The post Astigmatism first appeared on Medical centre "OKO-PLUS".

Strabismus

okoplus.ua — Tue, 19 Dec 2023 22:22:02 +0000

Strabismus or strabismus (Greek. strabismos, from strabos – wrong, askew) – this is bipolar vision loss. Косоокість фактично є відхиленням зорової осі одного з очей від спільної точки фіксації.

Normally, both eyes focus on the same point, but they transmit a picture to the brain, each from its own point of view. The brain combines these two images. This mechanism allows you to give volume to the image. Strabismus is caused by improper work of one or more eye muscles, що і призводить до неправильного положення очей.

To better understand, how the eye works together with the brain, try to stretch your hand out in front of you and look at it, alternately closing the one, the other eye. pay attention, how the hand changes its position. Although the images are slightly different from each other, the brain perceives them as a whole. With strabismus, these two images are perceived by the brain, як різні.

Every eye has it 6 muscles, which together provide eye movement. The brain controls everything 12 muscles, and in this way, both eyes look in the right direction. For that, so that the brain can combine two images into one, critically important, щоб всі м’язи працювали злагоджено.

The following types of strabismus are distinguished:

paralytic strabismus, caused by nerve damage, that innervate the eye muscles
squint of the commonwealth, the causes of which can be diseases of the central nervous system, infections and intoxications, mental injuries, ametropia, різке зниження зору або сліпота на одне око.

Causes of strabismus

There can be several causes of strabismus:

presence of congenital high farsightedness in the patient, myopia, astigmatism;
trauma, certain diseases, eye operations;
порушення іннервації окорухових м’язів.

У дорослих ознакою косоокості є двоїння зображення і головні болі.

If your child exhibits such eye behaviors as:

deviation of the eye to the temple or nose;
inclined or turned position of the head;
squinting;

то велика ймовірність розвитку косоокості і потрібно негайно пройти обстеження в окуліста.

Dangers, пов'язані з косоокістю

Strabismus – not only a serious cosmetic defect, and the impossibility for the child to choose a profession in the future, яка потребує наявності бінокулярного і стереоскопічного зору.

Strabismus interferes with the normal formation of volume (stereoscopic) vision in the first years of a child's life. in addition, children may also develop a tilt or turn of the head, щоб компенсувати косоокість і позбутися від двоїння.

If strabismus occurs, the child's brain begins to receive two images, which he cannot match in one. The brain reacts quickly by suppressing one image, to avoid duplication and works with one. This is realized by suppressing vision from the eye, that mows, making it “lazy” or amblyopic. Тому лікування косоокості потрібно починати якомога швидше.

The post Strabismus first appeared on Medical centre "OKO-PLUS".

Conjunctivitis

okoplus.ua — Tue, 19 Dec 2023 22:18:13 +0000

Conjunctivitis – eye disease, caused by inflammation of the thin transparent layer of cells, that protect the cornea. It is also called conjunctive. Звідси пішла і назва захворювання.

What are the types of conjunctivitis??

Doctors distinguish the following types of conjunctivitis:

acute
chronic
allergic

Symptoms are heaviness of the eyelids, burning, lacrimation, photophobia, discharge from the eyes.

What are the causes and methods of prevention of pathology?

Conjunctivitis can occur in conditions of polluted and dusty air, under the influence of chemical impurities, in case of non-observance of hygiene rules, with respiratory diseases, and can also occur with diseases of the eyelids and tear ducts, хронічних хворобах носа та носоглотки.

Prevention, in accordance, consists in timely detection and isolation of patients, careful observance by patients of the rules of personal hygiene and asepsis.

Хто страждає від кон'юнктивіту?

The disease affects adults, and children. In childhood, chronic conjunctivitis usually occurs with numerous follicles in the lower transitional fold (folliculosis). This is manifested in the fact, that the child has periodically “leaven” eyes. Adults also suffer from conjunctivitis. Periodicity of exacerbation of the disease – 3-4 рази на рік.

Treatment of conjunctivitis

Лікування кон’юнктивіту призначається тільки лікарем.

The post Conjunctivitis first appeared on Medical centre "OKO-PLUS".

Amblyopia

okoplus.ua — Tue, 19 Dec 2023 22:16:38 +0000

Amblyopia (from dav.-gr. blunt — тупий (non-state), weakened and ὀπός gen. dept. ὄψ — eye) or "lazy eye" - weakening of vision, зумовлене функціональними розладами зорового аналізатора.

When amblyopia develops?

Amblyopia develops in diseases such as strabismus, farsightedness, astigmatism, cataract, etc. In ophthalmology, amblyopia is considered one of the leading causes of unilateral vision loss. Around the world suffers from amblyopia 2% населення.

Механізм функціонування амбліопії.

With this disease, the eyes see different pictures, which does not allow the human brain to combine them into one volume. As a result, the work of one eye is suppressed. In people, who suffer from amblyopia, lack of binocular vision - the ability to compare two images (both eyes) into a single whole. This ability is necessary for depth assessment, обсягів та черговості розташування предметів в полі зору.

Different forms of amblyopia have their own manifestations. При слабкому ступені вираженості можливий безсимптомний варіант амбліопії.

Амбліопія у дітей.

Children, given the lack of sensory experience, cannot adequately assess, how well they can see, і чи однаково задіяні в процесі зору обидва ока.

You can think about the possibility of amblyopia in a small child:

squint
nystagmus
inability to clearly fix the gaze on a bright object

Amblyopia may be indicated in older children:

decrease in visual acuity and lack of improvement from its correction
disorientation in an unfamiliar place
deviation of one eye to the side
the habit of closing one eye when looking at an object or reading
tilting or turning the head when looking at an object
violation of color perception and dark adaptation

Visual disturbances in amblyopia can vary from a slight decrease in visual acuity to almost complete loss of it (light sensation) і неможливості зорової фіксації.

Лікування амбліопії.

The prognosis for amblyopia depends on the causes and time of detection of the disease. The earlier the correction of amblyopia is started, the more successful the result will be. The best effect is achieved when treatment is carried out in children up to 7 years, until the process of forming the visual analyzer is complete. In older children 11-12 років амбліопія практично не піддається лікуванню.

У разі своєчасного і повного лікування амбліопії у більшості випадків вдається практично повністю нормалізувати зір.

Only early, індивідуально підібране і наполегливе лікування амбліопії дає позитивні результати.

The post Amblyopia first appeared on Medical centre "OKO-PLUS".

Farsightedness

okoplus.ua — Tue, 19 Dec 2023 22:12:11 +0000

Farsightedness or hypermetropia – this is a pathology of refraction of the eye, in which the image of objects is not formed on the retina, and behind her. In other words, the peculiarity of the refraction of the eye apparatus in farsightedness is that, what rays, coming from objects, intersect behind the retina, therefore far-sighted people see better distant objects, than relatives. Тому для отримання чіткого зображення на сітківці доводиться посилювати рефракцію особливими двоопуклими лінзами.

Causes of farsightedness

The cause of farsightedness is more often congenital due to a significantly shortened eye axis – Less 23,5 mm – so called “short eyes”, або ослабленої заломлюючої сили рогівки.

Diagnosis of farsightedness

Most often people, who have farsightedness, do not complain about their eyesight. With a weak degree of farsightedness (2 diopters) far and near vision is quite good, but there may be complaints of quick fatigue, головний біль при значних зорових навантаженнях.

The first symptoms appear in childhood. Children do not study well, get tired quickly, cannot concentrate on doing work, are cranky, sleep badly. Early diagnosis and appointment of optical correction (glasses, contact lenses) allows to reduce the risk of such complications, як косоокість і амбліопія.

With an average degree of farsightedness (from 2 to 5 diopter) – distance vision remains good, and close – вже трохи погіршений.

With a high degree of farsightedness (above 5 diopter) – vision is poor and in the distance, and approx, since all the possibilities of the eyes to focus the image on the retina have been exhausted. This applies even to those subjects, які знаходяться далеко.

Farsightedness correction

Farsightedness correction can be ocular, contact lenses or surgery.

Glasses – the most common method of farsightedness correction. But they do not provide 100% vision corrections and significantly limit side vision, disrupt the stereoscopic effect and spatial perception, що особливо важливо для водіїв.

Contact lenses are used to correct farsightedness, which is often accompanied by amblyopia (low vision). In these cases, the use of contact lenses becomes therapeutic, бо тільки створення чіткого зображення на очному дні є найважливішим стимулом до розвитку зору.

There are several types of operations to eliminate farsightedness:

Hyperopic Lasik – a flap is formed from the surface layers of the cornea, it is discarded and the periphery of the central optical zone is vaporized with an excimer laser in the form of a ring, causing the cornea to become more convex and, as a consequence, its refractive power increases, що і дозволяє отримати ефект від операції.

Hypermetropic Artifakia – the essence of the operation consists in removing the own lens and installing an artificial one, який має більшу оптичну силу.

The post Farsightedness first appeared on Medical centre "OKO-PLUS".