Use color lenses. Resin or glass photo chromic lens, have a good color effect and reliable optical performance, and a pair of glasses can be indoor and outdoor, very convenient, but more expensive lenses. With a pair of sets of mirrors that in addition there is pair of Fake Oakleys Frogskins Sunglasses Cheap for Sale glasses with the lens ring is fully consistent sets of mirror sunglasses, a magnet fixed to the frame by a frame, though aesthetics greatly changed over the clip, but increased the weight of the glasses. If you have the habit of wearing contact lenses, you can buy the same with most people not directly prescription sunglasses, contact lenses, if not wearing a habit, you have to be individually configured with prescription lenses. Sunglasses can be equipped with a degree.
Not all sunglasses have UV features; a basic requirement to meet the standards of sunglasses to block the glare can only say that while there is no through more ultraviolet light. On the store counter sales of sunglasses, which the lens, on the tag or packaging are generally obvious signs, like the fabrics in the clothing has its ingredients label as consumers purchase must be carefully. Is there an anti- UV sunglasses function, we can not distinguish with the naked eye, the manufacturer of the product to consumers express commitment is the only reference sunglasses with a protective function, we can see the label and glasses in front of some of the products anti- UV express identity.
UV damage to the human eye is mainly determined by the wavelength of ultraviolet light, radiation time and intensity of strength and self- defense mechanism of the human eye, the cornea, the lens is the most common eye tissues from UV damage, solar dermatitis and corneal endothelial damage, Sun cataract is most relevant with eye diseases. In order to protect the health of the eye, you can choose a function of UV sunglasses lens made of, try to eliminate ultraviolet light. Myopia sunglasses with safety performance, which produced such Tiffany and Co Heart Necklace Jewelry Outlet lenses using PC tablets, TAC lenses and other impact-resistant materials, often marked with the instructions on the label and have impact resistance, if the product can meet the requirements on identification, motorcycle riders, the safety of the driver and other special requirements of the consumer is a good choice. Commitment to product identification, consumers should learn to protect them; the label or instructions to either keep it, or let the businesses indicated on the invoice, in case of disputes, it will not be for lack of evidence and passive.
The degree of lens should meet the requirements for plain lenses, and should not affect vision optical flaws. Identification method is simple, can be placed in front of sunglasses, observe distant targets through the lens, such as window frames or door frames, etc., then the glasses before moving up and down, the target should not be swinging and wavy deformation. Lens color is not partial, should be the color of the surrounding environment without distortion, sharp edges of objects have the ability to effectively identify different colors lights. Lens color depth selection, because, as the place activities may be required for different light sources and occasions, will affect the color of the lens shading effect. For Cheap Ray Bans Wayfarer 2140 Sunglasses Outlet sunglasses can effectively block the summer strong light, color glasses because there is enough depth, but ride or drive, do not choose too dark lenses. Comfort is important, but one must be comfortable to wear sunglasses to determine the appropriate size.