Your sunglasses under uv light?
Guide language: the summer is hot, it is necessary to wear a pair of sunglasses, but some people like to wear sunglasses, regardless of time and place, outdoor or indoor, even the twilight, watching movies, watching television are wearing it, it will increase burden of eye, eye muscle tension, blurred vision, serious when still can appear the symptom such as dizziness, not long.
in the first place, must have uv protection on the sunglasses. So, when buying sunglasses, should choose the lens or on the packaging & # 8220; 100% uv protection & # 8221; , & # 8220; UV400” , & # 8220; Uv protection & # 8221; Signs such as glasses.
second, lens distortion of color choice should be the color of the surrounding environment, the edge of the object is clear, can effectively identify the different color lights for the principle, the color of the lens in gray, tan, green is good, because these color lenses of infrared, ultraviolet absorption is good.
in addition, the function of sunglasses uv protection is related to the factors such as lens materials, process. Although, the deeper the lens color shading effect is stronger, but doesn't mean the stronger the uv protection ability. Lens is medium depth is good, of course, if required shading effect is very strong, should choose the darker lens. But cycling lenses or drivers can't choose the color is too deep, otherwise it will be difficult to identify the color of the traffic lights.
some people like to wear sunglasses, regardless of time and place, outdoor or indoor, even the twilight, watching movies, watching television are wearing it, it will increase burden of eye, eye muscle tension, blurred vision, serious when still can appear the symptom such as dizziness, not long. The symptoms are the result of the abuse of sunglasses.
epilogue: sunglasses uv protection function and the lens material, technology and other factors. Although, the deeper the lens color shading effect is stronger, but doesn't mean the stronger the uv protection ability. Lens is medium depth is good, of course, if required shading effect is very strong, should choose the darker lens. But cycling lenses or drivers can't choose the color is too deep, otherwise it will be difficult to identify the color of the traffic lights.
the article title: your sunglasses under uv light?
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