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When consumers buy sunglasses, be sure to pay attention to where

Different groups of people, according to different preferences and different uses to choose the sunglasses, but the most fundamental thing is to protect the wearer from safety and visual basic principle by the injury. Reduce the glare stimulus, visual clarity without distortion, anti-UV, no distortion of color recognition, accurate identification of traffic signals, should be the basic function of sunglasses. If these features are flawed, at worst not achieve sunglasses, and the heavily will produce dizziness, eye soreness and other symptoms of conscious not meet, and sometimes slow to react, argue, as the object color illusion and walking, and trigger symptoms of inequality traffic accidents and so on. So select the style sunglasses can not just focus on the neglect of its intrinsic quality. High-quality Polaroid TAC polarized lenses, polarized lenses protect your eyes from reflected light that people harm, can enhance the visual contrast outdoors, especially while driving, polarized lenses can be reduced glare, stray light.
Summer is the world's sunglasses, fashion, beauty, radiation protection, these features make it more like wearing sunglasses, but experts point out that, when selected mens sunglasses should take care not only concerned with style, but ignored their quality sunglasses. The following four kinds of failure do not wear sunglasses:
1, anti-ultraviolet unworthy of the name of the sunglasses. Good sunglasses polarized lenses can block 99% UV. Functional difference between wearing UV sunglasses, his eyes as if seen in the darkroom thing, then the pupil will become a large, residual UV launched into the eye but rather large, so that hurt the eyes. 2, perspective rate of unqualified sunglasses. Wear, will have traffic signals identify obstacles easily cause traffic accidents. 3, unlabeled categories logo sunglasses. Sunglasses are generally divided into three categories, namely for the shade of the sun mirror, light mirror for decoration and for anti-plane radiation waterproof snow blindness or special glasses. 4, against the performance does not meet the requirements of the sunglasses. By external shocks in the lens easily broken, debris will form a lethal injury to the eye.
And consumers in choosing sunglasses, you must pay attention to:
1, we must first know the purpose of choosing sunglasses
From the above description of several types of sunglasses, we know that there are different types of sunglasses for different occasions and people. First of all we have to buy sunglasses, make sure your purchase is intended for shade, or for decorative role play with costumes? In addition to whether the UV shade outside the functional requirements? The safety performance of the lens with or without special requirements? Only clear these aims, combined with style and wear the actual results in my face, to purchase a suitable sunglasses.
2, to learn to read the Product Identification
Not all sunglasses have a UV features a standard to meet the basic requirements of sunglasses, can only block the light at the same time no more UV through. If a pair of sunglasses can block light and can not block the same amount of ultraviolet light on the wearer, the TradeTang sunglasses will be accepted no more than the UV (wearing sunglasses, will reduce the flux into the human eye, resulting in wearers pupil increase). Sales counter at the store sunglasses, the lenses, the tag or packaging are generally clear uv380, uv400 and similar signs, as in the clothes have the same fabric content label, consumers must purchase closer look.
3, the intrinsic quality of the lens should be to identify the basic skills
(1) Women's Sunglasses lenses degree should meet the requirements of the plain glass lens, and should not affect the vision of the optical flaw. Simple identification method can be placed in front of sunglasses, observe distant targets through a lens, such as window frames or door frames, etc., and then glasses up and down before and after the move, targets should not sway and wave-shaped deformation.
(2) the color of the lens can not be partial, so that the environment should be the color distortion, sharp edges of objects with effective identification of the capacity of different color lights. The choice of lens color depth, as required by the activities of the place may be, for different light sources and situations, will affect the color of the lens shading effect. For sunglasses can effectively block the intense summer light, the color of glasses due to sufficient depth, but those who ride or drive, do not choose too dark lenses.
Just follow the above statement is done, you will choose a good satisfactory sunglasses.