Bifocal (multi) contact lenses for eyes. What is it, how to choose, prices

Contact lenses - this is the best of the developments, helping to correct vision. Long sitting at the computer, age-related changes in the body and many other unfavorable factors lead to a decrease in visual acuity, and lenses help to see better.

Bifocal models are the latest development of ophthalmologists, helping to solve any of the problems of visual impairment with farsightedness and myopia.

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Bifocal lenses for eyes are optical devices that can correct various visual impairments: seeing at far, near and intermediate distances. The thing is that they have a special shape - the presence of bulges outside and inside, due to which 2 optical centers are formed at once.

It is thanks to such features that ophthalmologists recommend them to people over 40 years old, suffering from hyperopia - presbyopia of varying degrees of complexity. With age, the eyes get very tired, concentration significantly decreases and it is difficult to read the inscription in a small cipher.

Like all other types of contact lenses, bifocal are divided into two categories:

• tough;
• soft.

There are also types that differ in terms of their service life:

• one-day, which should be removed every evening, put in a disinfected solution and used again as intended in the morning;
• short-term, their planned replacement can be appointed no later than 30 days after application;
• long-term wear - from 3 to 6 months;
• for continuous wear - you can not take off at night or are intended only for wearing during the day.

Bifocal optical devices for the eyes are divided into 3 main types. All of them, lens characteristics and prices are described in the table below.

Name	Characteristics	Prices (rub.)
Variables	This is one of the simpler options, where two zones allow you to see up close and into the distance. The design of this type is as similar as possible to bifocals: in the lower part of them, the zone of near visibility is localized, and in the upper part, for objects in the distance. There is always a cut at the bottom of such devices to prevent the lenses from shifting when worn.	From 2000
Aspherical	This type of lens is very popular according to ophthalmologists. They help to ensure the perfect image due to the fact that the refractive power varies from the center to the periphery. The center of the lens is for near vision.	From 2000
Concentric	This type of lens has alternating circular zones, helping the visually impaired person to perceive the image better both near and far. Such products can combine 2 or 3 zones. The shape is different, but it depends on which zone is located in the central part. In some products, it can be designed for distance vision, then in this case the visibility zone will be located near, and then again into the distance.	From 3000

Application

Bifocal eye lenses can completely replace multiple pairs of glasses.

They are recommended to be used in several cases:

• initial degree of presbyopia;
• myopia up to -10;
• hyperopia up to +6;
• astigmatism up to 1.25;
• if the lenses have already been picked up, but there are signs of blurry vision at close range;
• for contact correction.

Bifocal (multi) lenses also have contraindications:

• severe hyperopia and myopia;
• inflammation affecting the cornea and eyelids;
• glaucoma;
• drooping of the lower eyelid;
• increased dryness of the eye;
• decreased immunity;
• inability to get used to wearing this type of lens;
• subluxation of the lens;
• low level of corneal sensitivity;
• taking certain types of medications.

Bifocal eye lenses are worn just like any other type.

You need to apply them, adhering to the following algorithm of actions:

1. Hands should be thoroughly washed before installing the lenses.
2. Go to a dressing table or table in front of which there is a large mirror.
3. Disposable lens packaging should be checked for intactness. If no damage is found, the lenses can be removed.
4. To avoid confusion in the future when installing lenses, it is better to start with the same eye, for example, the right one.
5. Place the lens on the pad of the index finger, check for damage.
6. With the other hand, pull the eyelid, direct your gaze directly into the mirror. Place the lens exactly on the pupil and press it slightly. If it did not work out, then you can repeat the procedure.
7. At first, it is better to remove the lenses at night, placing them in a special solution to give the eyes a rest. This applies mainly to those who first try wearing optical products.

Elderly people find it difficult to put the lens correctly the first time. But do not be upset, an ophthalmologist can help, who will help to carry out the procedure correctly.

Top manufacturers

Today, many companies in the world are engaged in the production of optical products, but Japanese, French, German and American brands are considered the best and most popular. Russia also produces good products, but does not always offer high quality products.

According to ophthalmologists, the best manufacturers are:

1. Essilor International. This company has been operating in France since the early 70s of the last century. Over 60 years of active work, the company has released the best developments in the field of ophthalmology on the market, such as progressive optical products, zirconium oxide coated lenses, lenses with a reduction effect tiredness.
2. Nikon. It is a Japanese manufacturer that has been producing optical glasses for more than a hundred years, introducing and implementing advanced technologies. It was this company that pioneered the Chromea7 innovation.
3. Rupp und hubrach. It is the German company that pioneered the production of curvature lenses, premium products, and the Impulse technology.

All manufacturers, due to high competition, create unique optical products that help solve all problems with a decrease in visual function.

Rating

On the modern market, you can find a lot of varieties of contact lenses of foreign and domestic manufacturers, which are designed to prevent refractive disorders. The top 5 of the best includes products from foreign companies.

Biofinity Multifocal

These are silicone hydrogel lenses that help eliminate all the symptoms of presbyopia at various stages of the disease. This species is produced by Cooper Vision. When creating this look, a unique technology was applied to create the material, thanks to which the lenses perfectly retain moisture, allow air to pass through, so that wearing them throughout the day does not cause discomfort.

The lenses incorporate Aquaform technology, a low modulus lens that helps improve wearing comfort. You can wear this look for 7-30 days without taking off. The price of the lenses is about 3000 rubles.

Dailies Aqua Multifocal

These are daily lenses created by Alcon. These lenses provide 3 optical ranges, all transitions are smooth, due to which it is possible to achieve the most comfortable wearing and clear vision at any distance. This species has a special slightly rounded profile, which helps to easily and quickly put on the lenses even for a beginner, is not felt by the eye.

Also, when creating this type of lens, a well-thought-out moisturizing system was applied, which is activated when blinking. The moisturizing agent is released gradually throughout the day. This type does not violate the stability of the tear film, and does not provoke dry eyes. The average cost of this species is from 2500 rubles.

Biotrue ONEday for Presbyopia

These are soft daily lenses for correcting presbyopia - age-related hyperopia, they are created from a biocompatible material - GyperGel, contain more than ¾ of water, due to which the cornea is constantly hydrated. The lenses allow sufficient oxygen to pass through.

The 3-layer progressive design guarantees clear binocular vision at any distance. In these lenses, a person clearly sees a mobile display, a computer screen and objects on the street located at a distance. Lenses from the American manufacturer Bousch & Lomb will cost an average of 500 rubles.

PureVision Multi-Focal

This is another of the developments of the American company Bousch & Lomb - high-quality silicone hydrogel lenses, which require scheduled replacement only after 30 days. They help to restore visual acuity at any distance - in the maximum near or far.

The unique aspherical design allows you to see clear images at dusk or dark. Lenses perfectly let the air in, do not dry out the mucous membrane of the eye and do not cause discomfort during prolonged wear. The average cost of lenses is about 2500 rubles.

Proclear Multifocal

These are contact lenses with a scheduled replacement after 30 days. Recommended for correcting presbyopia. This ailment is quite common among people over 40.

When creating the lenses, the unique Balanced Progressive ™ technology was used, thanks to which a person is guaranteed clear vision at any distance. Moisturizing technology forms a thin, breathable water-based film that helps prevent dehydration and protects against build-up of deposits and impurities.

The average cost of lenses is from 1900 rubles.

Selection recommendations

It is not advisable to choose bifocal contact lenses for eyes on your own.

It will be better if the selection is carried out by a specialist who takes into account all the most important parameters:

1. Diameter and curvature of lenses. These parameters are determined individually so that while wearing a person does not feel pain and discomfort.
2. Structure and construction. This type of lenses for both daily wear and long-term wear can be of different shapes and configurations. The most common is the division into segments or in the form of concentric circles.
3. The power of optics. You can choose lenses with different dioptric values ​​of the optical zones. This choice depends on the nature and severity of the visual impairment.
4. Hardness level. Depending on the complexity of the visual defect, you can choose soft or hard models.
5. Duration of wearing. Some people prefer long-wearing models, and others prefer one-day ones.

When choosing, not only visual impairments, but also the anatomical features of a particular person are necessarily taken into account.

Bifocal (multi) eye lenses are an ideal solution for people who have decreased visual acuity due to age-related changes in the body. The choice of lenses is huge, but it is better to entrust their selection to an ophthalmologist in order to exclude all negative consequences.

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