Which glasses lenses are better: plastic or glass spectacle lenses. Spectacle lenses: types, choices, recommendations The best optical lenses for spectacles

The choice of spectacle lenses is a rather complicated process, because human health is associated with it. To date, there are many spectacle lenses, which means you can choose those that suit everyone individually, you can buy optical lenses in the online store without any problems, you need to navigate what parameters the lenses prescribed by the doctor should have and just select the necessary lenses on the website of the online store .
If we talk about optical lenses for glasses, then they are divided into:

• Astigmatic. These lenses are intended for the correction of simple or complex, also mixed astigmatism;
• Stigmatic lenses are used to correct nearsightedness, the so-called myopia, or farsightedness, which is also called hypermetropia. Also used for presbyopia, these are reading glasses;
• Optical lenses that are prismatic. These lenses are able to shift the image of the object in the fundus. This is necessary for the correction of certain types of diseases such as strabismus.

Features of the acquisition of spectacle lenses

Fortunately, manufacturers of spectacle lenses offer us a large list of spectacle lenses, which means that it is possible to choose exactly those that fit individually in all respects, this, of course, is a significant advantage.
Before you buy lenses, you should consider that they are made to improve image quality, as well as to create comfort and convenience. By choosing the right lenses, you can stylishly complement your image and thus change the impression that will be made on others. The main thing to remember is that the lenses must be selected with all responsibility and, first of all, take into account the recommendations of the doctor.

Choosing premium spectacle lenses

Many optical shops today use lens kits and display devices to make it as easy as possible to communicate the benefits of a premium product. To choose and buy lenses correctly, you need to make the selection process the most understandable and intuitive. This is assisted by visual consultation systems with a portrait image function, which help to see how a given spectacle frame will look on the face, how certain spectacle lenses look, and also evaluate various surface modification methods. Modern Impressionist systems from Rodenstock, Relaxed Vision Terminal from Carl Zeiss Vision allow accurate non-contact measurement of all individual parameters of progressive and sports eyeglass lenses using a three-dimensional camera and a touch or LCD screen. The high accuracy of measurements is a guarantee that the glasses will best meet the visual needs of the client, and there will be no visual stress during their use. The modern optical market is characterized by a trend towards an increase in the cost of lenses in the total cost of finished glasses. Demand for lenses of high price category is steadily increasing - in the USA, the average cost of lenses in the total cost of glasses is $ 274.92. An increase in demand for better lenses has been noted over the past years in the optical market of Russia. An active offer of high-quality spectacle lenses will ensure a high level of quality in vision correction.

Today, there are several alternatives to the use of glasses. They are, carrying out laser therapy operations. But, despite this, a variety of this optical product is still in trend, and is very popular.

The variety of spectacle lenses, their color, the quality of the material, sometimes makes it difficult to choose which type to choose.

Ultimately, they will serve as a corrective device to eliminate visual dysfunction, and be a fashion accessory that complements the style and lifestyle of a person.

To make the right choice, you should initially consult an ophthalmologist. He will perform the necessary research to write out a prescription with optimal optical performance.

For this purpose, the ophthalmologist will perform the following procedures:

1. Check visual acuity.
2. Will measure the distance between the pupils.

People who have previously worn glasses should also visit an ophthalmologist to make sure that their vision remains at the same level.

After performing these manipulations, you can go to the optician's store to purchase glasses:

Impact resistant lenses

For people leading an active lifestyle, including children, it is recommended to purchase glasses with impact-resistant lenses made of polymers (polycarbonate).

They fit well:

Based on the foregoing, four stages of the selection of points can be distinguished:

1. Get advice from an optometrist.
2. Visit an optical store.
3. Choose the right frame.
4. Make a choice of lenses.

Color

A wide range of colors allows the owner of the glasses not only to carry out vision correction, but also to make them a fashionable element and part of their image.

Most often, lenses made of polycarbonate material are stained.

Considered as an element of color therapy, creating a positive well-being and uplifting mood.

When choosing colored lenses, there is one nuance that you should pay attention to. The degree of darkening of the lens, and the degree of protection from ultraviolet rays is not the same thing.

Clear lenses can create a 100% barrier against ultraviolet penetration, but at the same time direct sunlight will blind your eyes. And the opposite situation is when dark lenses provide comfortable vision, but there is no protection from ultraviolet rays.

Kinds:

Refractive index

Abbe number, or refractive index - this is the most important parameter, it must be considered when choosing spectacle lenses. Its high performance ensures the minimum thickness of this product.

But high marks lead to color distortion, as a result of which an iridescent border appears when viewing objects.

Its occurrence is individual for each patient, therefore, when choosing a lens, it is necessary to achieve the optimal ratio of improving visual acuity, with a refractive index.

There are 4 groups of refractive index:

1. Normal refractive indices are 1.498-1.53.
2. The second group is characterized by the parameters of the average value of 1.53-1.63.
3. Group 3 has a high value of 1.64-1.73.
4. High level of refractive index, starting from 1.74 and more.

Higher index values ​​provide a spectacle lens with increased strength and minimal thickness, while it will have a price much higher than its counterparts with a small coefficient:

• If the patient has a slight deviation in visual function, in the region of 2 diopters, the optimal decision would be to choose the value of the Abbe number from 1.5 to 1.6.
• in 6 diopters, it is necessary to stop at the choice of the value of the refractive index 1.6-1.7.
• A coefficient of 1.7 is used for neglected forms of the visual organs. It will be optimally combined with aspherical design lenses.
• If the choice is in favor of thicker lenses, then the frame should have a more massive shape and consist of plastic or horn material.
• Slim, elegant frames on screws are well combined with lenses having a high refractive index.

Optical influence of lenses

For diseases of the visual organs, it is necessary to correctly select corrective products.

For this reason, it is used:

• With farsightedness or nearsightedness spherical type lenses are suitable for the patient.
• Astigmatic lenses, are used to eliminate visual dysfunction called.
  Two types of lenses can be used:
  • Cylindrical. They are used in the treatment of simple astigmatism.
  • Toric. Can be used in the treatment of complex or mixed astigmatism.
• Afocal lenses characterized by a complete lack of optical capabilities. They are used if a person has a difference in the parameters of the display of visual images (aniseikonia). This type of lens can also be used, if available.

Spectacle lenses - design

There are two design directions to consider when choosing this optical product. Since glasses, in addition to eliminating visual defects, are perceived by many people as a fashion accessory that complements their image.

The following types are distinguished:

In turn, aspherical lenses can be:

The use of aspherical lenses has a number of advantages:

• When using them, you can achieve minimal distortion of the displayed image.
• Compared to other types of lenses, they have an extended viewing angle.
• in the peripheral zone, maintains high rates.
• Visually, they have a natural shape.

Material for manufacturing

There are two types of material that are used in the manufacture of eyeglass lenses:

Lens Coatings

All lenses, regardless of cost, are coated with a protective layer that prevents scratches on their surface. Recently, many types of protective coatings have been used. They have a purpose depending on the type of human activity.

The following types of lens coatings can be distinguished:

This type of optical product has become in demand, especially in recent times. Most people cannot imagine their life without the Internet, which requires working at a computer. Also, office workers often resort to wearing this accessory.

To implement the right one for working at a computer monitor, three factors must be considered:

This type of product can be used by people who do not have visual dysfunction. To relieve eye strain, glasses that have a green or brown tint are very suitable. They relieve visual fatigue, increase the clarity and contrast of the image.

It is very important that this product is not used while outdoors or while driving.

Popular brands

First of all, spectacle lenses are a commodity, and therefore it is worth paying attention to the manufacturer of this optical product. Popular brands have a high cost, but are distinguished by a high degree of reliability and comfort when wearing the product.

The top three in the world are:

Long gone are the days when a person with poor eyesight could only rely on plastic-framed glasses with thick glass and heavy lenses. Modern ophthalmology can offer a lot of different options on the topic: “Spectacle lenses”. And the frames today are produced in a variety of shapes and from a variety of materials.

A bit of history...

The first mention of glasses can be found in documents dating back to the 13th century AD. The material from which the first frame was made was tortoise shell. It happened in China 2 thousand years ago. Approximately 1000 AD. e. monks, when copying manuscripts, began to actively use

When books became available to the public (this is a period around the 15th century), glasses became more in demand. Frames, lenses - everything was far from perfect, and their design was somewhat different than now. Then the person either held the glasses in his hand, or put them on the bridge of his nose.

By the beginning of the 17th century, eyeglasses equipped with temples appeared in London. And the end of the 19th century was marked by the fact that high-quality spectacle lenses were invented in Germany. They were glass, and this situation continued until 1940, when a new one was developed in Pittsburgh that became a worthy competitor to glass - fragile and quite heavy.

Over the next 75 years, optics developed by leaps and bounds. Today, modern lenses are classified according to a mass of parameters and can help a person with any eye disease.

Materials for the manufacture of lenses

As mentioned earlier, lenses for eyeglasses can be glass (inorganic) or plastic lenses have been used for a long time. This material has excellent optical qualities, effectively protects the eyes from UV radiation. Its (glass) surface is sufficiently resistant to scratches. However, glass lenses are much heavier and thicker than plastic lenses, and it is not always possible to install them in modern frames.

Polycarbonate spectacle lenses are thinner and lighter than glass. In addition, they are shock-resistant, which makes it possible to safely wear such glasses for children and people involved in sports. This material has the ability to protect the eye from ultraviolet radiation.

Since 2000, another material for the manufacture of eyeglass lenses has appeared on the market - Trivex.

Variants of optical influence of lenses

Lenses for (or rather, its correction) in their optical action are spherical, astigmatic and afocal.

Spherical lenses are most suitable for people suffering from farsightedness or nearsightedness. The name astigmatic speaks for itself. Their main area of ​​application is the correction of astigmatism. Moreover, with simple astigmatism, cylindrical lenses are needed, and with complex or mixed astigmatism, toric lenses are needed.

Afocal lenses do not have any optical capabilities at all. These glasses can be worn either by people without any problems with visual perception, or by those who suffer from aniseikonia (the eye has a significant difference in the size of the perceived images). In this case, when making glasses, eiconic lenses will be required. If a person suffers from strabismus, glasses are made with afocal prismatic lenses.

Optical zones and their number

There can be several optical zones in the lens, therefore, according to their number, classification into categories such as monofocality and multifocality is possible. Multifocal, in turn, can be divided into bifocal, trifocal and for glasses.

Monofocals have one focus and are used only when correction of a single distance is needed - near or far. The scope of these lenses is limited to the correction of astigmatism and poor accommodation (the ability of the eye to change focus due to the weakening or strengthening of the contraction of the ciliary muscle) associated with age.

When it is necessary to correct vision at several distances at once, they speak of multifocal lenses.

An example of their use is presbyopia, where a person cannot see fine print or small objects at close range. Glasses with multifocal lenses will save a person from having to take them off when moving his gaze from a close distance to a distance and vice versa.

Lens coating types

Eyeglass lenses, no matter what material they are made of, will not have ideal characteristics. Meanwhile, the application of various coatings makes it possible to significantly improve their quality and capabilities, ranging from increased resistance to damage and pollution to improved visual comfort. Consider the most commonly used and sought after lens coatings among consumers.

Photochromic - makes it possible to protect the eye from the aggressive effects of ultraviolet radiation due to its ability to change light transmission depending on the illumination. Polarized lenses are coated with a special film (filter) and allow only vertically polarized or non-polarized rays to pass through, so the eye will not suffer from glare from water, road or snow.

To reduce discomfort when light rays are reflected from the sclera, cornea or lens surface, an antireflection (anti-reflective, anti-reflective) coating is applied.

The hardening coating increases the resistance of the lens to scratches, and the hydrophobic coating makes them smooth, prevents water, dirt and dust from accumulating and makes it easier to care for the glasses. For those who spend a lot of time in the sun, glasses with a UV-blocking lens coating will be useful.

For the manufacture of sunglasses, a mirror coating is used, which is applied only to the outer surface of the lens and can be of different colors. In addition to everything described above, they are widely used, i.e. the color of the lenses of the glasses can be very different.

Difficulties of choice: glass or plastic?

Currently, glass "eyes" have practically no advantages over their polymer counterparts. Plastic lenses for eyeglasses, the price of which can fluctuate significantly depending on optical parameters and hardening coatings, lead (and already by a large margin) in the optics market.

However, when it comes to correction (a big minus of 10.0 diopters or more), from an aesthetic point of view, mineral lenses will look more advantageous due to the fact that their edge will be thinner than that of plastic.

In addition, glass lenses for eyeglasses are traditionally used by manufacturers that produce eye protection products from the sun.

Refractive index: which one to prefer?

The refractive index of lenses made from polymers varies from 1.5 to 1.74. The thinner and stronger the lens, the higher its coefficient. It weighs less and costs more. When choosing the right one, it will be guided by a prescription from a doctor and a frame that is preferred.

Monofocal or progressive lenses for glasses with small diopters (from -2 to +2) can be with a refractive index in the range from 1.5 to 1.6. With average diopters (from -6 to -2 and from +2 to +6), the optimal coefficient will be from 1.6 to 1.7. If the diopters are high enough, it is best to give preference to lenses with a refractive index greater than 1.7.

If the consumer opted for a frame made of plastic, then in it a thick lens with a small coefficient will not be as noticeable as in a frame on a fishing line or on screws. If the frame is screw, then a thin and strong lens is preferable, that is, with a higher coefficient.

Interchangeable lenses in glasses

There are people who do not have any vision problems, but nevertheless they wear glasses to maintain their image. Interchangeable lenses of different colors and shades in them enable their owner to match the environment in which he is, to see perfectly in all weather conditions, in the daytime and in the dark. Gray lenses will protect your eyes on a sunny day, blue ones will be in demand in partly cloudy conditions, transparent lenses are designed for cloudy weather, and yellow ones perfectly polarize light from street lamps in the evening.

Athletes also tend to prefer glasses with interchangeable lenses, which are easy to change in one motion, but are firmly fixed in place. The shape of these lenses is designed to fit snugly to the face, but at the same time provides excellent vision. A water-repellent coating is also an important element of such lenses; water does not accumulate on them, but flows down freely, leaving no streaks.

Price range

Prices for spectacle lenses can fluctuate a lot. Products are considered inexpensive, the cost of which ranges from 1290 to 1700 rubles, lenses of the middle price category will cost from 2700 to 9000 rubles and even more. The expensive ones include products with a cost of 12,000 to 26,000 rubles. Everything is purely individual. The price depends on the mass of indicators: material, color and design of the lens, shade of anti-glare, diameter and thinning of the lens, its coating. In general, the more financial opportunities a buyer has, the more elegant, advanced and at the same time comfortable lenses for his glasses he can afford.

Today there are progressive eyeglasses that use progressive eyeglass lenses. These are new generation eyeglass lenses. They replace two or three pairs of glasses. With the help of such lenses, one glasses are made that allow you to see at all distances.

Spectacle marking is a technological process necessary for ordering progressive lenses and installing them in a specific frame. When marking on glasses and in a special questionnaire, important parameters are noted, these include: vertex distance (distance from the cornea of ​​\u200b\u200bthe eye to the glass); pantoscopic angle (angle of inclination of the frame); frame bend;

Progressive glasses require an adjustment period. According to European standards, it is considered normal when adaptation to glasses with progressive lenses is up to 1 month. Everyone adapts differently. Someone can immediately get behind the wheel of a car, but someone needs to set themselves up to get used to a new, higher level of visual comfort, to understand how progressive lenses work.

In progressive glasses, when looking around, head movement is necessary. When walking up the stairs, you need to lower your head to get to the middle zone. The distance to the steps is from 1.5 to 2 meters. You can not run your eyes through the optical zones. Be sure to completely abandon the use of "old glasses".

For a qualitative period of adaptation, if necessary, a psychologist is involved for more detailed step-by-step counseling and psychological support during the period of adaptation to progressive glasses.

The duration of the adaptation period is from 2 to 30 days, depending on individual characteristics.

Types of computer glasses

Glasses designed for "computer work" have several varieties. They differ in the structure of the lenses, as well as in the presence of a special coating. The latter is called "anti-reflective". The device should be selected on an individual basis after consultation with an ophthalmologist.

Anti-glare computer glasses

They are special optics with special polarized lenses. The latter guarantee reliable protection against glare of light of various origins, including screen light.

A similar glare effect can be observed not only on a computer monitor. Glare can provoke car windows, water, mirrors. Therefore, anti-glare glasses can be considered universal, as they are suitable not only for sedentary work at the computer, but also for everyday life, for example, for driving a car in poor visibility conditions.

The efficiency of this optics is ensured by a lens of a special design that can block and scatter reflected light. Thus, the polarized reflected beam is not perceived by the eye, and this is extremely important for maintaining sharp vision.

Anti-glare glasses absorb the harmful blue and violet light spectrum and pass the harmless yellow, while maintaining the brightness and clarity of the image.

People with 100% vision can wear this type of glasses. They are a way to prevent eye pathologies. But it is necessary to coordinate this acquisition with an ophthalmologist.

Safety glasses for computer with monofocal lenses

Monofocal computer glasses are also called single focus. In this variety, the entire glass of the lens is the optical zone and is intended for work. This ensures a wide field of view.

As a rule, most people with healthy vision use this type of optics. It helps to correct the distance between the screen and the organ of vision. The user does not have to make unnecessary movements of the head or eyes. You can view the screen completely without straining your muscles.

When using these glasses, the ciliary muscle relaxes in a person. As a result, the tension in the eyes is reduced, blurred vision is eliminated.

These glasses are suitable for people with good vision, regardless of age.

However, there are certain disadvantages of monofocal glasses. So, objects that are at a greater distance than the monitor will appear slightly blurry, fuzzy. This is especially noticeable for people with nearsightedness or farsightedness.

Safety glasses for computer work with bifocal lenses

This type of lens is designed so that the top is set to focus on the computer screen, and the bottom is adjusted for viewing at a short distance. These computer glasses have a visible transition separating the optical areas.

It is worth noting that when using such glasses, objects that are outside the screen will appear blurry. Peripheral objects will look the same. To focus your eyes, you will have to constantly tilt your head back, and focus your vision on the bottom of the glasses. Such specific optics can cause pain in the neck, shoulders, and headaches.

These glasses are suitable for users with presbyopia, but are not suitable for driving a car.

Computer glasses with progressive lenses

In appearance, these glasses resemble optics with monofocal lenses. They do not have a clear line between the optical regions. However, they have three observation zones.

The upper area is designed to view objects at a remote distance. The intermediate (large) middle area is used directly while working at the monitor. The smallest area at the bottom of the glass helps to focus on close objects.

Such optics are considered the most comfortable for working behind the monitor, since the user can clearly see at any distance and naturally.

It is also important to note that such glasses will improve the light spectrum that hits the retina. For this reason, it is convenient to stay in rooms with fluorescent lighting in progressive lenses.

Computer glasses are presented in a wide range. It is quite difficult for an unknowing person to make a choice.

The most commonly used types of spectacle lenses are:

• Monofocal.
• Bifocal.
• Progressive.

There are Fedorov's computer glasses. They are designed to filter UV rays, monitor radiation, protecting the eyes from harmful spectra. Due to this, the muscles of the eye relax, and the deterioration of vision stops. Mastuda Chinese computer glasses also protect against screen radiation, but not all models are made with UV protection. They are low cost and stylish.

Gaming goggles for the computer differ in ergonomic and easy design. In order to create a three-dimensional effect, high-quality wide-angle lenses are used. There are many models designed for people with visual impairments. In these glasses, you can adjust the sharpness.

Yellow computer glasses have special light filters that cut off blue-violet waves that have a harmful effect on the eyes.

Monofocal lenses

Their operating principle is to point the optical zone at the monitor. Most often they are used by people with normal vision. However, they can be selected for people with farsightedness or nearsightedness.

bifocal lenses

Designed with the top half focused on the screen and the bottom half for near vision correction. These eyeglass lenses do not have a smooth transition, they have a visible border separating 2 optical zones. This provides a person with comfortable work behind the monitor and viewing at a close distance, while objects far away will be fuzzy and blurry.

progressive lenses

At first glance, such glasses do not differ in any way from monofocal ones due to the fact that there is a smooth transition of diopters between optical zones. These products allow a person to see at any distance. The principle of operation of progressive glasses is that the upper zone provides clear vision at a distance, the wide intermediate zone is suitable for working at a computer monitor, and the lower one is for viewing objects at close distances.

What are the most important requirements to consider when purchasing anti-computer glasses? The first rule that they must meet is an exact match to the working distance, that is, the distance between the seat and the monitor. This figure can vary greatly from person to person.

Initially, polarized reading glasses may seem like a good solution. However, be careful: they are only designed to work over very short distances. To clearly view text and images on a computer, a person is forced to get closer to the screen. At the same time, in turn, the user will inevitably encounter a bad and uncomfortable body posture. This can cause tension in the neck and back, spoiling posture. Neither the most ergonomic chair nor the most comfortable mouse can protect against such problems ...

The next step could be progressive glasses for work that can be worn throughout the day for clear, comfortable, near and far vision. They are a good choice for most common PC work environments, but their performance is somewhat limited. Progressive glasses allow you to sharpen your vision at all distances.

Eyeglass lenses are designed in such a way that their lower part allows you to see objects located nearby. Through the lower part of the lenses, a person looks at the monitor. To see clearly, you need to raise your head. Staying longer in this unnatural position puts strain on the neck and shoulders, as well as burdening the eyes over time.

It is in this case that anti-glare computer glasses will be an excellent choice. How do these ophthalmic "rescuers" work? Their visual zones are focused on eye movements during work. The selection of glasses is carried out personally, in accordance with the personal needs of the person. Computer glasses are characterized by a large field of view at close and medium distances (0.5-4 m).

There are several types of glasses for reading and working at a computer, choosing them should be guided by personal needs, only then they can best protect your eyesight.

They are divided according to the type of lens:

1. Lens type "Near". In this option, the maximum distance at which the user sees clearly is 2 m, that is, with these glasses, a person is able to read documents and view files without problems. This type is ideal for people who work at the computer for a long time.
2. Lens type "Room". These lenses are named according to the distance at which they provide clarity and comfort of vision. The maximum distance is about four meters, providing the user with comfortable vision from a reading distance up to a standard room size. The "Room" option is intended for people who work with clients and a computer at the same time. While driving, they do not notice that they are wearing computer glasses; their benefit lies precisely in the ability to move without losing the quality of vision.
3. Book lens type. These lenses focus more on the reading range, where the maximum distance is 1 meter. Compared to conventional reading lenses, which are usually designed for a fixed reading distance, "Book" lenses offer a significantly wider field of view and therefore the ability to move away from the computer for more relaxation.
4. Lens type "Individual". This version is adapted to the needs of each individual user. The selection of glasses is personal, the optimal maximum distance is set to a centimeter for each person. The user's profile, face shape and required working distance are taken into account.

Contraindications for progressive glasses

People over the age of 50 often experience blurry focus range, in other words, they can't see well at different distances. A person cannot consider objects located at a distance and focus on nearby objects. For each type of activity, you have to select a separate corrective optics.

Progressive glasses help to solve this problem, they perfectly cope with age-related changes in the visual apparatus. However, products have a number of contraindications for use:

• Anisometropia. Ophthalmic disease, when the difference in refraction between the left and right eye is more than two diopters;
• Cataract. Stable vision correction is almost impossible to achieve, since clouding of the lens develops rapidly;
• Strabismus of any origin. Pathology does not allow simultaneous movement of the organ of vision in three zones of multifocal glass;
• Nystagmus (trembling pupil). The anomaly causes optical distortions in different parts of the lens, it is problematic to adapt to them with such a disease;
• Individual intolerance to corrective glass.

Strabismus, nystagmus.

For the selection of progressive glasses, a relative contraindication is the presence of common diseases: diabetes mellitus, thyroid disease, osteochondrosis with severe autonomic disorders. Also relative contraindications are the following eye diseases: cataract, glaucoma, macular degeneration, strabismus.

Harm of computer glasses

In general, correctly selected optics for working behind a monitor are not capable of causing any damage to the organs of vision. The benefit or harm of computer glasses will bring you depends on how correctly you have chosen them. If the optics was chosen incorrectly, then this can adversely affect the eyes.

The harm from glasses for a computer is due to the fact that they have certain features that should be selected individually for each user and for his state of vision. Also, when choosing, you need to take into account the usual distance from the eyes to the computer screen.

Anti-computer glasses can lead to undesirable consequences only if they were chosen incorrectly. Wearing this product may cause vision problems.

The selected glasses should not cause complaints such as:

• Feeling dizzy.
• Feeling of pressure behind the ears, on the bridge of the nose.
• Narrowing horizons.
• Image distortion.

Average price for computer glasses in Russia

The price of optical lenses for glasses depends on many factors.

First of all, take into account:

• Lens material used may make this item more expensive, if the refractive index is high, or if their surface contains a coating that prevents the penetration of ultraviolet radiation.
• The price of the product will be higher if the optical power indicators are high.
• The design of the frame significantly affects the cost., aspherical glasses, always have a higher price tag compared to traditional shapes.
• Refractive index. A high refractive index provides lenses with increased strength and minimal thickness, but at the same time increases the price.
• Purchase by prescription. Finished lenses always have a lower price than those that have to be manufactured according to prescription parameters. Functional coatings make this type of product more expensive.
• Spectacle lenses have a different price, the economy option can be purchased at a price of 1200- 1700 rub.
• Mid-range glasses will cost up to9000 rub.
• Expensive models include an optical product costing from12000 rub.
• The choice of lenses for glasses is a crucial moment that should be taken seriously.. Glasses are, first of all, a kind of optical product, it is this criterion that is dominant when choosing glasses.
• Frame and design is an addition which makes glasses a fashion accessory.
• Before you go to the optical store, you need to visit an ophthalmologist so that he can perform the necessary types of research and help you choose the right option for an optical product.

As a result of analyzing such a large price range, the buyer usually looks for an average value, and based on the cost of the cheapest pair (500 rubles) and the most expensive (7-10 thousand rubles), he concludes that models in the price range of 4500 rubles will be the best and best choice .

In fact, good and unpretentious men's, women's and children's models cost an average of 1200-1400 rubles, but the only drawback of such products concerns not quality characteristics, but frames (not everyone is "classic").

When buying in optics stores, you should focus on a cost of 2000-2500 rubles - these are high-quality products that will always be covered by a guarantee, while the selection of frames is also the responsibility of the seller.

How much do computer glasses cost in online stores?

The price of progressive optics depends on several factors:

• Manufacturer;
• Lens thickness;
• Progression channel width (transition area between top and bottom). The higher the score, the higher the price.

On average, the cost of a quality product from a popular manufacturer ranges from four to nine thousand rubles, depending on the technical characteristics. Expensive optics are produced under the brands Essilor International and Rodenstock. The price of products from these companies is in the region of fifteen or seventeen thousand rubles.

Less popular brands offer a good product with a price tag of two to four thousand. However, they have a short lifespan.

The cost of progressive eyeglasses consists of the cost of the frame and the cost of progressive eyeglass lenses:

• The cost of frames for progressive glasses depends on the country of manufacture and brand awareness;
• The cost of spectacle lenses for progressive glasses depends on:
  • from the complexity of the prescription for glasses - the diopter affects.
  • from the design of the lenses (there are several types of individual and standard progressive lenses, selected based on the prescription)
  • from the lens material - the fragile CR-39 material can withstand a load of 10 kg; materials PNX, Eyas, Eynoa are refined, durable, withstand loads up to 80 kg, crystal clear.
  • from the presence of types of coatings - water-repellent (hydrophobic - rapid sweating when the air temperature changes: outdoor / indoor in winter), dirt-repellent, antistatic, anti-reflective (high light transmission, anti-glare), hardening coating (scratch resistance) and so on.
  • from the index (refractive index). The higher the index, the thinner the lens. Refractive index - 1.5, 1.53, 1.6, 1.67.
  • from the possibility of staining lenses,
  • from the need to use photochromic technology,
  • from the country of manufacture and the manufacturer of spectacle lenses.

Medical selection with a prescription for progressive glasses and the manufacture of glasses (the work of a master) is not paid separately, but is included in the order for progressive glasses.

Price range for medical frames for progressive glasses: From 1 700 rub. up to 25 000 rub.

Price range for progressive spectacle lenses: From 4 150 rub. up to 43 000 rubles (price for 1 lens).

Manufacturer	Lens name	Advantages	Regular price for 1 lens, rub	Promotion price for 1 lens, rub	Discount, %	Savings, rub
INDO	Activa 1.5 Natural	Versatile progressive lens for PC, tablet and smartphone users with extended near and mid field	8 900	7 950		1 000
NIKON	Presio i	Standard progressive lens for beginner presbyopes	5 500	4 150		1 350

Learn about new technologies in progressive glasses in the article by ophthalmologist, head of the department of clinical optometry Kiyko N. V. "Tablets and smartphones have changed the design of lenses for glasses."

Tablets and smartphones have changed the design of eyeglass lenses.

What are spectacle lenses? What materials are they made from? What you need to know when choosing lenses for your future glasses in optics?

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There is a common misconception among people that the main thing in glasses is the frame. Of course, a lot depends on it - your comfort and image, for example. But the quality of your vision is determined by spectacle lenses. It depends only on the lenses whether you will see this world as beautiful as it is.

The world of optics does not stand still. Constantly evolving, today it can offer "bespectacled" such comfort and excellent vision that 20 years ago it was hard to even imagine. In order not to get confused by the variety of offers and to know exactly what is needed, you need to be aware of what spectacle lenses exist and how they differ from each other.

tags glasses eyeglass lenses lens coatings

CLASSIFICATION OF OPTICAL LENSES

Spectacle lenses are classified according to:

• material (mineral/inorganic and polymer/organic)
• number of optical zones (afocal, single vision, bifocal, trifocal, progressive)
• the possibility of correcting visual defects (stigmatic, astigmatic)
• refractive index (standard, fine, super fine, ultra fine)
• shape of refractive surfaces (spherical, aspherical, lenticular)
• influence on the intensity and properties of the light flux (light, color, with spectral coatings, photochromic, polarization).

For an ordinary person, not a specialist, in order to choose glasses for himself, it is enough to know only some of the parameters of this list, which we will discuss below.

What are eyeglass lenses made of?

Due to the high level and pace of life, there are increased requirements for spectacle lenses today. This explains the presence on the optical market of many materials used in spectacle optics. However, any of the materials must:

• be transparent
• be homogeneous in composition
• have certain optical characteristics
• have certain properties (density, hardness, chemical resistance)
• have high quality (do not have, for example, bubbles and foreign inclusions).

In general, according to the material of manufacture, all spectacle lenses are divided into 2 types:

• organic
• mineral.

mineral or inorganic are called lenses made from inorganic glass. Initially, glass was the starting material for the creation of eyeglass lenses, and it has a number of advantages:

• durability
• hardness
• resistance to scratches, thermal and chemical influences.

However, glass also has significant disadvantages:

• big weight
• excess thickness under certain parameters
• minimum impact resistance.

In addition, due to the peculiarity of the manufacture (melting) of optical glass, serious defects can appear in it, which can affect the quality of vision.

In the mid-1950s, glass was replaced by synthetic materials. organic lenses are made from polymers with the use of various additives. After the invention of the first optical polymer CR-39, a real revolution took place in the production of glasses. Spectacle lenses steel:

• lighter
• more durable
• susceptible to coatings, staining and design experiments.

Modern high-tech developments of polymer lenses, combined with special coatings, provide almost limitless possibilities for ensuring the highest quality of vision for a person wearing glasses.

TYPES OF COATINGS OF OPTICAL LENSES

• hardening coating

Polymer lenses are more prone to scratches than glass lenses. The hardening coating increases the abrasion resistance of the lens, i.e. makes it less susceptible to friction with soft objects, such as sponges or wipes when wiped, and also increases resistance to scratches and damage when in contact with sharp and / or hard objects. Thanks to this coating, the service life of the glasses is significantly increased.

• AR (anti-reflective) coating

When the light flux is reflected from the surface of the lens, various secondary images may appear: one's own eye or objects. They are caught by the eye and reduce the contrast of the image, as well as distort the visual perception of objects: this is especially pronounced when driving a car on a wet road and at night.

In addition, as a result of the reflection of the light flux, glare occurs. They are not captured by the eye of a person wearing glasses, but they prevent others from seeing his eyes. This is a big disadvantage from an aesthetic point of view.

The anti-reflective coating of spectacle lenses neutralizes all these factors: it increases the clarity of the image, reduces the amount of interfering glare and improves the aesthetic appearance of a person wearing glasses.

• Water-dirt-repellent (hydrophobic) coating

If you look at the surface of the lens under a microscope, you can see that it is not perfectly smooth: there are microscopic peaks and dips on it, in which drops of liquid linger. The hydrophobic coating is the thinnest silicone film that fills in the smallest irregularities and levels the surface, due to which liquid drops easily roll off the lens. In addition, on such a film, the drop does not spread, but rolls, reducing the contact area of ​​water with the lens surface. Thus, glasses get dirty less and stay clean longer, it becomes easier to care for them.

Another advantage of the water-repellent coating, which will be appreciated by people living in a cold climate: during sudden temperature changes (for example, when you enter a room from the street in winter), such lenses are much faster and easier to clean from condensate.

• Antistatic coating

Some materials, such as silk, nylon, and human skin, when in contact with the surface of eyeglass lenses, can generate an electrical charge that attracts dust particles from the environment. Repeatedly removing dust from the lens leads to scratches and, consequently, a decrease in the life of the glasses. A special coating prevents the formation of a charge of static electricity and the attraction of dust to spectacle lenses.

• Multifunctional coating

A coating that simultaneously: protects a spectacle lens from scratches and mechanical damage, gives it water and dirt-repellent properties, reduces light reflection from its surface and blocks electromagnetic radiation, is called multifunctional. It provides high quality vision in almost any situation.

• Mirror finish

Mirror coating is trending today: it completely changes the appearance of the glasses, making the eyes indistinguishable behind their glasses. This coating is applied in various shades to the front of spectacle lenses and performs a purely aesthetic function.

PROGRESSIVE OPTICAL LENSES

In the last 20 years, progressive spectacle lenses have become widespread. Their design provides for different optical power in different parts of the lens, which allows a person to comfortably and clearly see near, far, and at medium distances. Such lenses open up a completely different quality of life for people with age-related (after 40 years) changes. You no longer need to have two or even more glasses: for reading and for watching TV, for example. In addition, the design of a progressive lens eliminates discomfort when looking from an object that is close to one that is far away: the eyes do not strain.

When purchasing glasses with progressive lenses, you must remember that this is a qualitatively new level of lenses, and, like any complex device, you need to learn how to use them.

TYPES OF PROGRESSIVE LENSES

There are universal and special progressive lenses. Universal ones are designed to work at all distances (from 40 cm to infinity) and can be both standard, which use the parameters of the average consumer, and individual, made to the specific parameters of a particular person. Special or office lenses provide high-quality vision at a limited distance: from 40 cm to 4.5 m. Glasses with such lenses are adapted to work with a monitor (at a longer distance) and a smartphone and / or documents (closer), thereby helping to minimize eye fatigue during the working day.

Progressive lenses can be mineral or polymer, clear or tinted, coated or uncoated, and photochromic. You can read more about photochromic chameleon lenses in another article on our blog at the link:.

HOW TO CHOOSE LENSES FOR GLASSES

To determine which glasses you need, you need to know how often you are going to use them and for what purposes (driving a car, working at a computer, reading, all day or only during working hours). This will determine which type of lenses to choose and what coatings should be on them.

In addition, to choose a frame, you must have a prescription for future glasses: not every frame can be combined with the spectacle lens you need. There may be restrictions in the choice of material from which the lenses are made, or for the lenses you need, it is necessary to provide for certain sizes of the rim of the frame. The thickness and weight of the lenses can also become an obstacle to making glasses in the frame you like.

In Ochkarik optics salons, professional doctors work who will check your eyesight, write out the necessary prescription, in case of its absence, and help you choose glasses for excellent vision.

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