More intense summer sun, eye protection is increasingly important.In particular driving out, wearing a sunglasses can prevent and glare cause eye irritation.In fact, drivers choose to wear sunglasses when it is especially luxurious.When choosing sunglasses lens color, not too deep.Because deep eye sunglasses will affect the image pushed to the brain time, this delay will cause distortion feeling of speed, so that the pilot made an error of judgment.Sunglasses experimentally that the color too dark sunglasses allow the driver to wear of reality delayed reaction time of 100 ms, thus increasing the braking distance of 2.2 meters.Polarized sunglasses can filter out the sun 's reflection over the multi-angle light is also suitable to wear in the rain, so moderate color polarized sunglasses are the first choice of the driver, the color medium is able to vaguely see their eyes in the mirror after wearing sunglasses.The driver can choose the best fit to drive brown, gray polarized sunglasses, dark green sunglasses are also possible.Because tinted sunglasses lenses can effectively filter out a lot of blue light, thereby improving visual contrast with clarity.The gray polarized lenses is the nature of chromatography can be balanced so absorbing, see things will darken without significant chromatic aberration.Brown sunglasses is able to increase the brightness of a good thing, especially for wearing while driving under the environmental pollution or foggy weather.As well as in select polarized sunglasses, the most important thing is to consider the UV factor, anti-UV sunglasses regular packaging will be marked UV grade (UV).

Which, UVA can be filtered in the 320-420 nanometer wavelength ultraviolet light, UVB wavelengths can be filtered at 275-320 nanometers, UV400 filter wavelength is 400 nm or less, there is ultraviolet resistant.

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