In the first place, when you drive a car or do the outdoor activities, your eyes may be blinded by the sun light which is reflected by the road and the water so that you cannot fix your eyes on a given object for a long time. This time, a pair of polarized sunglasses based on the theory of polarization of lights is needed not only for the protection of the sun ray but also the avoidance of the blaze. It is said that polarized lenses can eliminate and filter the polarized ray in the beam, making the sun light orbit in the correct direction to be visualized in our eyes, which resembles the theory of shutters, making the sun light milder and softer.
What's more, let us figure out the advantages of polarized sunglasses. When you are working or spending your leisure time outside, the polarized sunglasses help us not to be affected by the blaze thus leading a bad mood because of the blinding sun ray. Moreover, they will also enable us not to be misled by what we see, I mean, the illusion. In the extreme case, our eyes may be damage so as to develop into myopia etc.
Last but not the least polarized sunglasses are not surely cheap sunglasses since lenses are the high costly components to assemble to a pair of polarized sunglasses, but purchasing a pair of such sunglasses is worthwhile for the multiple functions of the magical eyewear.
To sum up, polarized sunglasses are a kind of complex sunglasses which can facilitate our lives. Buying a pair of polarized sunglasses is a must when you go out.
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