Sunglasses are a necessity for every person: they not only protect our eyes from harmful sun rays, but also are a stylish accessory to complement any style. That is why the market of sunglasses is increasing and developing every year. Increased the range has become a real headache for buyers: to choose from all this variety suitable glasses, made of quality materials and fits into the framework of modern fashion, was extremely difficult.
The first and basic rule of buying sunglasses is: “Make a purchase in retail stores”. So you can be sure that your luxury Rayban sunglasses (http://magazinochkov.ru/shop/brand/rayban/) the most that neither is true! But the copies that are sold in markets and supermarkets, can be even harmful. The fact is that in these, as a rule noname, models have the lenses of poor quality, filters which work so that your pupils will expand instead of shrink. This will lead to the fact that the eye will get a much larger dose of ultraviolet radiation, which, of course, will have a negative impact on their health.
When choosing sunglasses, pay special attention to the colouring of contact lenses. Brown glass is better inhibits blue light. This increases the color contrast of the grass against the blue sky. The gray lens does not change the color of the surrounding objects, which facilitates real perception of distance. Yellow and orange lens increases contrast vision on a cloudy day. Also important is the degree of color glasses.
It should also be noted that the usual women's sunglasses (http://magazinochkov.ru/shop/brand/zhenskie/) do not give the eyes complete protection. It can only provide glass with anti-glare and polarizing filter.
Glass with polarizing filter neutralized by the blinding glare of light, for example, from water, sand or wet asphalt, at the same time increase the contrast and highlight colors, but without distortion.
And anti-reflective coating prevents light reflection from glasses, and as a result, from the eyes. The contrast and color did not undergo any changes. This coating typically is applied from the back side of the glass to Shine to a minimum the amount of light penetrating on the sides of points. Hence the sharpening in sunglasses with anti-reflective coating.
