Sunglasses buying guide

1. First of all clear purchase purposes. Buy ray ban wayfarer sunglasses first to determine your purchase is to provide shade, or for the purpose of matching dress plays a decorative role. In addition to shade, whether there are any requirements for ultraviolet, safety lenses have no special requirements only when there are clear objectives, combined with style and practical effects in my face, to buy a pair of good sunglasses.
2. Learn to read product identification. Not all sunglasses are UV-resistant features. A Deputy meet standard basic requirements of Sun mirror, only said in reduced visible strength of while also can blocked has part of purple outside light, guarantee wearing Sun mirror and does not wearing Sun mirror compared to, eyes accept of purple outside radiation does not increased, does not because wearing has Sun mirror instead by Purple outside light injury increases (wear Sun mirror, will reduced entered people eye flux, cause wearing who pupil increases).
Ray ban outlet s unglasses sold in the store on the counter, its lens on, tag on, or on the outer packaging is generally obvious sign, just like in its fabric composition marked on clothing, consumers must be carefully viewed. Only mark barrier ultraviolet, UV380 UV, 100% or UV400 UV is the express function.

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3. Distinguish between lens inner quality and Assembly quality of basic skills. Lenses degrees should meet the requirements for flat lenses, and there should be no optical defects of vision acuity. Identification method for simple, sunglasses can be placed through lens observation distance straight line target, such as the window frame or door frame, glasses up and down back and forth, goals should not have swing, jump, wave-like deformation. Fluorescent tubes or viewing lens surface reflection images, when you go to sunglasses, fluorescent tubes around the lenses without distortion, without distortion, instructions to install lenses without deformation, degrees are also consistent throughout.
4. Correctly select cheap ray bans lens color. Lens color is not available: color distortion of surrounding objects, object edge clear, has the ability to effectively identify different color lights. Special attention to the red, green color distortion.