What contact lenses and lenses for glasses is better to choose?

A person with a perfect vision today is more difficult to meet. The Russian Ministry of Health claims that vision problems affect 50% of the country's population. In the next 10 years, this number will increase to 70%. This is due to the increased load on the eyes. Televisions, computers, mobile devices, printed information negatively affect a person. Properly selected contact lenses and lenses for glasses will help correct the situation.

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1. What lenses are better for choosing for eyes and glasses
2. Which is better to choose lenses for glasses
3. What are good contact lenses for eyes
4. Contact lens classification

What lenses are better for choosing for eyes and glasses?

Professional vision correction is necessary in those situations where there are deviations from normal values. Even if the deviations are minor, the right measures should be taken. Children glasses are prescribed from any age, and lenses from 10 years to avoid serious consequences. For adults, glasses and lenses help to take the load off the eyes.

Modern technology allows you to create high-precision lenses for eyes and glasses. For the manufacture of the following materials are used - glass, plastic, organic. Points today are not just a tool for vision correction, but also an accessory.

For many, glasses are the best choice, but they are not worn in every situation. They limit lateral vision, often they can not be worn due to the threat of breakage.

Advantages and disadvantages of points

 

Advantages and disadvantages of contact lenses

For many people, contact lenses have become an excellent choice, allowing you to engage in physical activity and other activities. But they need to be replaced regularly, use special solutions and monitor hygiene. Many people fear the procedure of removing and putting on lenses.

Glass lenses are made with the addition of minerals. They do not scratch with time, used for several years. But with careless handling, they break up and hit the face with splinters. Because of their traumatic risks, it is better to recommend them only to tidy people leading a quiet lifestyle. At the same time, mineral lenses are more relevant for diseases such as a high degree of myopia.

The analogue is plastic lenses that are difficult to break. They are light and comfortable, but scratches appear on their surface over time. Glasses with such lenses are prescribed to children or simply to those who lead an active lifestyle.

The product of innovative technologies are organic lenses. They are made using polymeric materials. They are light and durable, provide the correct vision correction.

Which is better to choose lenses for glasses?

Lenses are the most important element of glasses, so attention should be paid to their choice. In such matters it is better to consult a doctor, as well as focus on the characteristics:

1. optical performance;

2. refractive indices;

3. manufacturing materials;

4. special coatings and so on.

This allows you to get a result that meets expectations. It is better for children to pick up glasses that do not fight and are not damaged. The best material is polycarbonate.

For people who spend a lot of time driving or walking in the air, color lenses are suitable. Green and brown color help to enhance the contrast, and yellow dims the bright glare.

For those who have a lot of time to work at the computer, it is better to choose lenses that reduce eye strain and protect against serious problems. These glasses are recommended to be worn even with visual impairment for prevention.

Optical indicators

Important optical indicators of lenses are diopters and center-to-center distance. They can not be determined independently, so first consult with an ophthalmologist. Optical indicators of lenses must be observed exactly, otherwise glasses will be of no use and may impair vision.

Refractive index

The higher the coefficient, the thinner the lens and the less it bends the light. Lenses with a small coefficient visually narrow the face. It also becomes heavier, which is reflected in the appearance of the frame. For glass lenses, this coefficient is 1.5-1.9, for polycarbonate lenses, 1.5-1.7.

Manufacturing materials

Today lenses are made from polycarbonate or glass. On this depends the refractive index and wear resistance.

Special coatings

If necessary, ordered lenses with different coatings. They allow you to get rid of glare, improve vision in the dark, or make the lens clear and clean by 10%.

What are good contact lenses for eyes?

About a third of people with visual impairments prefer to wear contact lenses instead of glasses. They do not cause discomfort during the day, like glasses. In addition, ophthalmologists say that with regular contact lenses, vision correction is carried out in a natural way. This happens due to the fact that the lens clings to the pupil, so there is no distortion and refraction of light.

The main advantage is the ability to engage in physical activity, wear protective helmets and use other accessories. Contact lenses are not sensitive to weather changes, so they do not mist over, crack or deteriorate.

Contraindications are some diseases - conjunctivitis, bronchitis, ARVI, pneumonia, allergies, tuberculosis, and so on. Also not recommended to wear lenses with strabismus. If you follow all the recommendations and follow the requirements of the doctor, then no problems arise.

Contact lens classification

As soon as the ophthalmologist will examine and write out a prescription, proceed to the selection of contact lenses. To do this, also consult with experts. Some optics and clinics offer computer vision diagnostics, so lenses are selected without any problems.

Contact lenses are primarily divided by the service life:

1. one-day;

2. two weeks;

3. monthly;

4. semi-annual;

5. annual

A simple option is one-day lenses. They can be used for one day and then replaced. They will suit those who use them only from time to time. In addition, you can not worry about the occurrence of an eye infection, or that the lens is damaged or lost.

Long life lenses are economically advantageous.They effectively affect vision correction and help get rid of problems.

Lenses are also divided into categories depending on the mode:

1. day mode;

2. extended mode - from 2 to 30 days;

3. mixed mode - you can shoot at a convenient time.

Day wear lenses are used more often because they allow your eyes to rest at night. In this case, you also do not have to worry about buying special drops. In addition, they reduce the risk of developing an eye infection.

Long and mixed wearing requires specific handling and following instructions. They are not suitable for people with diseases of the eyes or tear glands.

Depending on the characteristics of the material emit:

1. hard;

2. soft.

In the first case, silicone is used, and in the second case, hydrogel. Hard lenses keep their shape, do not wrinkle and require a minimum amount of special drops. But they put more strain on the eyes.

Soft lenses from hydrogel are easy to put on and take off, they are invisible, but at the same time, this material does not allow oxygen to pass through.

The main classification is based on the use:

1. optical;

2. therapeutic;

3. cosmetic.

Optical lenses used directly for vision correction. They are prescribed by a physician for diseases, including myopia, astigmatism, and presbyopia.

Therapeutic lenses designed to protect the eyes. They contribute to the healing of the epithelium and help to better absorb drugs.

Cosmetic products intended for those who want to change appearance. They can change the color and pattern of the cornea.

Choose lenses for glasses or eyes you need only on the basis of their own preferences. In these questions, be guided by the recommendations of ophthalmologists, who will promptly tell you exactly what means are needed for vision correction or eye protection. Otherwise they can be harmful.

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Attention! This material is the subjective opinion of the authors of the project and is not a guide to purchase.