Correcting glasses - what is it? Corrective glasses: general characteristics, description, varieties, photo

Visual disturbance has become common today. However, there are optical devices that allow to solve this problem. See how a healthy person helps glasses corrective. What it is? These are special products used for refraction and accommodation.

The risk of purchasing substandard products

Today optical devices for correcting sight are sold almost everywhere. They can be purchased even in underground passages. But is it worth it to trust their quality? Many people have never seen such an ophthalmologic product as corrective glasses. What is it, they do not know. Faced with the need to buy similar products, they make mistakes. As a result, they have to face negative consequences:

• A person begins to experience fatigue in the eyes, and vision continues to deteriorate;
• A low-quality setting irritates the skin, leading to allergic reactions;
• The glasses look unfair, since their owner did not attach importance to the appearance of the products.

What should I look for?

Choosing glasses correcting, what is it such - it is necessary to know necessarily. This is an ophthalmic product, so you should take responsibility for its purchase. You need to buy it only in the salons of optics. The main component of the product is the frame. There are several types of it:

• One-piece. It frames the lenses completely.
• Semi-head. Has only the upper edge. It also fixes the lens. Glass is free from below.
• Bezobadkovaya. Deprived of the edges. The handles are connected directly to the panes. Such frames of the corrective glasses contain an element securing them.

The materials used are metals, as well as polymers. The frames made of acetate can be considered a kind of innovation.

If you want to become the owner of a quality product, be sure to look at the specifications. The documents state GOST R 51193-98. There are unscrupulous firms that, while creating glasses correcting what it is, do not understand at all. They should be manufactured in accordance with legal regulations. They regulate the general specifications.

The standards allow you to determine whether the products meet the medical requirements for vision correction. Optical devices created in artisanal conditions pose a danger to human health. But the correcting glasses made according to all GOST requirements can be bought boldly.

Which lenses should I prefer?

Mineral glass and materials of organic origin are used for production of corrective glasses. In the first case, there is a transparent substance. It is formed after a strong cooling of the pre-melted glass-forming components. The resulting lens is quite heavy, but it perfectly resists mechanical influences. On the contrary, plastic products weigh a little. But such glasses require additional coating to avoid scratches.

The approach of Russian and foreign firms

Domestic manufacturers successfully mastered the manufacture of corrective glasses according to the technique of lenses coloring. They use a variety of substances that have sunscreen properties. Most often you can see products of gray and brown hue. However, there are more saturated colors on the market: green, blue, yellow. Americans prefer gray glass, and Europeans prefer brown.

Russian companies are prone to arbitrary choice of color. Abroad, on the contrary, try to take into account the lifestyle of clients. Representatives of creative professions are offered glasses with gray lenses. Products reduce the contrast of green, and blue and blue make less saturated. Brown glass is desirable to appoint drivers and generally people spending a lot of time on the road. If it is important for the patient to maintain the color quality and increase the contrast at the same time, he needs green-colored lenses. They are representatives of such professions as motorcycle racers, arrows, golfers.

It is believed that glasses with yellow lenses have a characteristic sports appearance. But experts recommend them only to people who are engaged in tennis. They improve the orientation of the player on the court.

If you are prescribed corrective glasses, you need to study the reviews - they will tell you a lot of useful things. Comments can vary, because here, as in the case of drugs, it all depends on the individual characteristics of the patient and the manufacturer of the products.

Important Settings

If the vision varies from 0.5 to 0.05, telescopic glasses are required. They are effective for ametropia, while excellent increase the size of objects. In products there is one negative and a positive lens.

Prismatic glasses are intended for patients suffering from pathology of the eye muscles. Two prisms present in them, refract rays at an angle of 90 degrees. Due to this, a person can put a book on his chest and in such a position to see what is written in it. Such optics provides irreplaceable support to bedridden patients.

In some cases, ophthalmologists appoint mirror glasses corrective. What it is? They have reflective properties, they are used in people with unilateral hemianopsia.

Experts always write out a prescription for corrective glasses, which contains special parameters:

• The distance separating the optical centers of the lenses from each other;
• The above figure for both eyes;
• Optimal center displacement;
• Purpose optics.

To determine the optical power, a dioptrymeter is used. It is present in all ophthalmic rooms. It is necessary to visit the eye doctor on time to stop the disease in the early stages.

Certain models of corrective glasses require accustoming, while others differ in unpretentious character. Complexities usually arise with optics that allow solving specific problems, such as astigmatism, for example. That's why sometimes even products, selected by professionals, give side effects. You have to get used to them gradually.

Now in the salons are produced corrective glasses, photos of which are offered to be watched right there, on the spot. Sometimes their optical capabilities exceed the permissible. They should be cautious. Customers sometimes order eye care optics in advance.

Doctors recommend to give up wearing individual models of corrective glasses on an ongoing basis. It is better to use them from time to time, say, when you sit behind the wheel. You can wear them when working with parts that are small in size.

Selecting a product according to the type of person

So, the theoretical part has been studied, now you can think about creating a harmonious image with glasses. They should not be repelled by their appearance from their owner. Of course, you can choose the shape of the product. However, do not forget about several rules that are considered basic.

1. Bez-and semi-bezel frames are not recommended for owners of an elongated type of face. It is better for such people to purchase glasses of medium size.
2. Products that have a high fit are good for owners of a broad forehead.
3. Points with a low landing will look great on people with a large nose. You can use a massive frame of a dark shade. It is also good to use a double jumper. Similar advice can be given to people with a large chin. If all the facial features of a person are proportional, the use of glasses of any shape is allowed.

Select by Color

People with blond hair are fitted with corrective glasses with a silver or gold frame. The bronze shade looks great among the owners of red hair, while the shatens can be recommended brown, golden or red. Brunettes, on the contrary, need to consider black color.

Choice according to wardrobe

Strict glasses perfectly match with a business suit. More vivid solutions are recommended for street style. They are popular with the younger generation. Such products are often found among optics with a polymer frame.