How to choose sunglasses
Material shall be a primary criterion in choosing sunglasses, because health is more important to the style or image. Glasses not only help protect your eyes from bright sunlight, but also do not allow UV light (only glasses with glass lenses). Just wanted to say that too small glasses (whether glass or plastic) though will look stylish, but will be a poor tool in sun protection.

Sport, recreation and sunglasses
For sports sunglasses special requirements. They not only must reliably protect your eyes from the sun, but have increased strength, to be made of special plastic, not glass, because glass increases the risk of eye injuries. According to statistics, 90% of eye injuries could be prevented if protective eyewear, with nearly half of all injuries occurring in children under 14 years.

How to choose glasses for a child?
In the first year of life, the main indications for correction are aphakia and high myopia. In children under the age of three leading indications for correction of hyperopia is for esotropia. Preschool children (3-7 years) to correct aphakia, congenital myopia and hyperopia are added early acquired myopia and astigmatism. At school age, the leading indication for the correction of myopia is acquired.

How to pick the right rims of the glasses?
New Year - the right moment to change the old, familiar, or start something new. For example, you can radically revise its image, or even just thinking about it. Think we'll start with the principal, and most importantly to us, loved ones, of course, the eyes, and everything associated with them.

What you need to remember when choosing a frame for glasses?
Participation points is a fairly serious procedure. Many people, especially women, are choosing to purchase the frames as a costume or decorations. The frame should be modern, "trendy" and yet have to face, color and styling your hair, and jewelry.

Improving appearance points lenses
Vysokoprelomlyayuschie lenses made of organic materials can significantly improve the appearance of spectacles. Using the lenses of materials with refractive indices from 1.60 to 1.74 can substantially reduce the thickness and weight of lenses and glasses to make a superficially more attractive, even at high degrees of ametropia. Variety vysokoprelomlyayuschih range of lenses in combination with optical coatings, which offer today, many manufacturers, often puts consumers in a quandary: what lens to choose? To make the right decision, we must understand the basic characteristics and features of the lens material with high and superhigh refractive index.

Contact lenses
It is believed that the eyes of the lens blush, "dried" lacrimal gland, eyes acquire a specific shine (not the greedy, not that ravenous), triggered by a myriad of diseases and so on. I wear lenses for more than 4 years. With regard to shine in the eyes and other cosmetic effects of the MCL, then I am with my close friends spent the experiment: one in the eye lens, the other without.

Spectral points or more on computer vision syndrome
American Association of optometric studies published data on the new occupational disease "Computer vision syndrome" - (KSZ). Computer vision syndrome in one form or another is observed in 100% of computer users. His symptoms are familiar to almost everyone who holds the monitor more than 4-5 hours a day. Ophthalmologists note the rapid growth of cases of SGC. For example, in North America with typical complaints of the SGC to the doctors turned to 1992, 10 million people. In 1996 - 15 million people., And in 1998 for 22 million people.

Polarizing eyeglasses. What do they differ from ordinary sunglasses?
Although the cost of those and other quite comparable, but the fishing is desirable polarized glasses. How to check whether the data points polarizing? Very simple. Take two pair, and lean their glasses to each other. You will be able to see through them. I now turn to some points by 90 degrees. If you continue to see through the glass, then the conventional glasses, but if you do not see - that's all right - you are in the hands of polarized eyeglasses. What it does affect fishing?

Sunglasses - Accessory enigma
The bright sun is often the cause of the appearance of wrinkles. On clear summer days, it is impossible to watch without squinting his eyes, especially if it is near sea. Sunlight reflected by water, shine in mercy. The only salvation in the hot, cloudless days are the sunglasses.

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Rimless eyeglasses 

Over the past ten years is very widespread rimless eyeglasses. Although few people know that they were extremely popular in the early twentieth century. However, if this popularity is due not fashion trends, and more prosaic criteria. 

In particular, the lenses in those days were made of mineral sunglasses, so they are themselves weighed a lot, but if we add here more weight and frames, then about any comfort speech did not go. To facilitate maximum points had to sacrifice frame. In addition, the frames were so massive and ugly, often spoiling the appearance of man. 

With the development of industry the opportunity to manufacture glass lenses of lighter materials, but bezobodkovye Glasses still continued to be in favor. To date, there are two options for glasses without frames: poluobodkovye and fully bezobodkovye. In poluobodkovyh mountings lenses or glasses are held by nylon fishing line, screws and other fasteners devices. Fully bezobodkovyh same as fixing handles most commonly used screws that are screwed into holes on the lenses. 

Bezobodkovye glasses of good quality may cost slightly higher than the glasses in a plastic or metal frame. This is due primarily with the intricacies of their production. The fact is that to create really quality points must be observed set of standards - they must be comfortable, lightweight, durable and safe. Not every material from which produce lenses, suitable for this, but in bezobodkovyh glasses are the most important part is the lens. For example, the creators bezobodkovyh points categorically refuse mineral glass - it is too brittle and has a large share. But 
polycarbonate using them in high demand, as distinguished lightweight, durability and impact resistance. In addition, it is fairly soft, which facilitates its handling, has a high refractive index and good absorbs ultraviolet radiation. 

In recent years, recognition of opticians in the world got a new synthetic material trayveks. Its advantages are still greater ease and impact resistance than polycarbonate, as well as ease of processing and coloring. Trayveks completely absorbs ultraviolet radiation in the range of UVA and UVB. 

But the most popular material for the manufacture of spectacle lenses is CR-39. However, despite the fact that it is most distributed in optics as compared to other materials, lens manufacturers themselves admit that it is not the most quality. It has several significant shortcomings. First, the low refractive index - because of this lens have to make thicker, which creates some difficulties in the production bezobodkovyh points. Secondly, if we compare the CR-39 with polycarbonate or trayveksom, it is much inferior to them in impact resistance.