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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Glasses chameleons 

Points, which are the common people called "chameleons", known for quite some time. Their advantages are undeniable - the bright sunglasses themselves darken, turning in an excellent eye protection. This is especially important for those who had developed photophobia or improved tearing. 

In some glasses combine the functions of correction and protection from bright sunlight. But we can not say that they enjoy so very popular. Why? 

The fact is that quality lenses with a stable dimming appeared on optics market a few years ago. Up that consumers are offered only a cheap knockoff in which the lenses are faded just a single season. Moreover, these lenses made of plastic, so are often distorted, passed a large amount of ultraviolet radiation, easy scratched and fought. Naturally, consumers did not like it. 

Modern glasses "chameleon" who, incidentally, more properly called photochromic, made from high glass. They quickly darken the bright light, just as quickly become transparent in the shade and provide good vision in darkness. 

The main question fans of "chameleons" - how to distinguish fake from the real quality goods? Ironically, very simple: wear sunglasses in bright light and look around. Good lens with the effect of obscuring never distort color, but only little priglushat them. More attention should be paid on the edge of the lens: if you cut a light, then suffered a blackout in the form of spraying, which is likely to quickly erased. High-quality lens has a dark edge, since the whole weight of her cast of photochromic glass, there will be a long time. Darkening the lenses should be "down" evenly. Denser shading on the edges of lenses and a light in their central parts is permissible only for points with plenty diopters - from -7 to +7. 

This is interesting:
If the choice of photochromic glasses are no opportunities to go out in the sun to check the speed and quality of the blackout, you can bring to a lens to the source of bright electric light. Good lens never darkened by artificial light, only sun. 

The second thing you should know when buying a "chameleon" - the degree of obscuration. It may be different:
from 10% to 55% - the so-called "female fotohrom" weak darkening, usually brown in color;
from 15% to 65% - the average blackout, often gray;
from 30% to 85% - a strong darkening, usually green in color, it is recommended to those who have an increased sensitivity to light.