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do you carefully choose sunglasses?

Use sunglasses will reduce the brightness level of your eyes, but there are also other benefits such as fewer wrinkles and a reduction in cancers such as macular degeneration.

UV protective lenses that are tinted, you want to make sure that your sunglasses are doing enough for you.

sunglasses provide protection against ultraviolet rays from sunlight. Ultraviolet (UV) light damages the cornea and retina. Good sunglasses can eliminate UV rays completely.

sunglasses provide protection from intense light. When the eye receives too much light, therefore, closes the iris. Once you have closed the iris as far as possible, the next step is squinting. If there is still too much light, as there can be when sunlight is reflected off the snow, the result is damage to the retina. Good sunglasses can block light entering the eye as much as 97 percent to avoid damage.

sunglasses provide protection from glare. Certain areas, such as water, can reflect a great deal of light, and sites can be distracting or can hide objects. Good sunglasses can completely eliminate this kind of glare using polarization (we will discuss polarization later).

sunglasses eliminate specific frequencies of light. Certain frequencies of light can blur vision, and others can improve the contrast. Choose the color of your sunglasses lets them work better in specific situations.

Glasses of cheap labor, but not so, and eventually will lose its effectiveness.

When you buy a pair of cheap sunglasses, to give up many of the benefits and over time, can make things worse. If you buy a pair of sunglasses that do not offer UV protection, increasing their exposure to UV rays. These sunglasses block some light. Its iris is opened to allow more light, allowing more UV light as well. This increases the damage UV light can cause the retina.

Cheap sunglasses that offer UV protection work because of a coating that is sprayed on the lens. This layer will decrease over time and allow UV rays to enter directly through the eyes.

Think of the tone: The color of the tint determines the parts of the spectrum of light that are absorbed by the lenses. Manufacturers use different colors to produce concrete results.

Gray shades are great for all purposes of reducing the overall amount of brightness with the least amount of color distortion. Gray lenses offer good protection against glare, making them a good choice for driving and general use.

Shades of yellow gold or reduce the amount of blue light while allowing a greater percentage of other frequencies through. Since blue light tends to bounce and scatter off a lot of things, you can create a kind of glare known as blue haze. The yellow tint virtually eliminates the blue part of the spectrum and has the effect of making everything bright and sharp. That's why snow glasses are usually yellow. This tint really distorts color perception, which is not suitable for any business that relies on accurate color.

Shades of amber and brown tones are also good general purpose. They have the added benefit of reducing glare and molecules that absorb higher frequency colors such as blue, in addition to UV rays. There has been research that suggests that near-UV frequencies, such as blue and violet can contribute to the formation of cataracts over time. In fact, Sunday Tigre has a patent on a particular version of these called Blue Blockers. These sunglasses also distort colors similar to yellow lenses, but increase contrast and clarity.

Green shaded lenses filter some blue light and reduce glare. Green, because they offer the highest contrast and greatest visual acuity of any hue, are very popular. Purple and pink tones to provide the best contrast of objects against a green or blue. They make a good choice for hunting or water skiing.- sunglasses votes

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