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Summer is the world of sunglasses, fashion, beauty, radiation protection, these functions let people more like wearing sunglasses, but

concerned expert points out, the choice of sunglasses to be more careful, can not only pay attention to style, but ignore sunglasses itself

quality problems. The following four unqualified sunglasses 10 million don't wear:
1, prevent ultraviolet function reality sunglasses. Good sunglasses lenses, can hold back more than 99% of the ultraviolet ray, and the logo

has UV400 lenses are 100% (99.99%) of the block uv. Wear ultraviolet prevention function poor sunglasses, eyes see things like the dark

room, at this time the pupil get bigger, the remnants of ultraviolet ray but will a lot into eyes inside, to make the eyes hurt. Best buy to

store or in high reputation online purchase or flagship store to buy. I certainly don't of small purchase, although those sunglasses can

also prevent ultraviolet radiation, but lens and work are not in place, also is not qualified, 10 million can't because it's cheap to buy

it, inferior eyes will cause to the eyes of different level damage.
2 and transmission ratio not qualified sunglasses. Wear the after sunglasses, can produce traffic signals identify obstacles, is caused

extremely easily traffic accidents. All the sunglasses, including is professional JiaShiJing, sports mirror, fishing mirror... . (myopic

lens and reading glasses except) easy identification method for, can be in sight sunglasses, through the lens observation distant targets,

such as window frame or frame, etc, and then move up and down the glasses before and after, lens targets within view should not oscillation

and wavy deformation.