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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Eye protection from UV radiation 

The last few years has been increasingly hear talk about the dangers of finding the open sunlight. Year after year in the press an increasing number of publications on the dangers of ultraviolet radiation. 

And, unfortunately, this is a good reason - a constant and steady destruction of the ozone layer leads to the fact that the surface Earth reaches more and more harmful ultraviolet radiation. According to scientists, the amount of ozone in the atmosphere for the period from 1985 to 2005 decreased by 4% and continues to drop. This decrease in the ozone layer by 1% leads to the fact that the level of UV radiation increases by 2%. As a result, living organisms are higher dose of irradiation that expressed in the growth of various diseases associated with solar radiation. 

Ultraviolet radiation is an electromagnetic wave length from 100 to 400 nm. According to the decision of the International Commission on the light, this radiation is divided into three types, in three ranges: 

- UV-A - radiation with a wavelength of 315-400 nm, causing changes in the skin: the effect of sunburn, the acceleration of aging, the development malignant cancer tumors. 

- UV-B - radiation with a wavelength of 280-315 nm, causing sunburn and provoking the development of skin cancer.

- UV-C - radiation with a wavelength of 100-280 nm.

This is interesting:
All that is on the surface of the Earth, in varying degrees, reflecting the sunlight. Snow reflects up to 85% of ultraviolet rays, soil and grass - 5%, water - 20%, sand - 17%. It is easy to guess that being on the beach, near the water, the person receives a higher dose. 

The prolonged presence in the open in bright sun is not as innocuous as it may seem. Many believe that all harmful effect of sunlight is reduced to a maximum of skin burns or overheating of the body. Ophthalmology and optics of world argue that the effect of prolonged exposure to sunlight can be a burn of cornea and conjunctiva, education pterygium film on the cornea, clouding of the lens. All this leads to partial or complete loss of vision and often leads urgency of surgical intervention. Also wrong to think that solar radiation is dangerous only in the hottest time of year 
or in hot climates - even in winter the eye can suffer from the fact that light is reflected from the snow surface, causing the so-called "Snow blindness". 

The nature of the human body has provided some protection from ultraviolet radiation. With regard to the eye, to the protective mechanisms include the eyebrows, eyelids and eyelashes. Furthermore, even the nervous system in the process of evolution has developed such a mechanism - in bright light eyes squint themselves, thereby reducing the number of rays that fall into the eyeballs. Nevertheless, eyes are quite sensitive to ultraviolet, and therefore need additional protection. In sunny weather encouraged to wear hats with wide brim or canopies, use sunscreen and, of course, sunglasses.