As the UV filter is clear it means that even clear lens eyewear (like safety eyewear) can provide 100% protection from UVR providing they are marked UV400. This rating ensures that all light rays with wavelengths up to 400 nanometres, including both UVA and UVB rays, are blocked out. What to look for are sunglasses/eyewear labelled or marked CE UV400 which means they block over 99% of UVR. Some older, inexpensive sunglasses may have had the UV filter applied to the front of the lens – this means that with scratching the UV protection can reduce. ![]() Category 3 only tell you how much visible light is blocked.Ī sunglass UV filter is actually clear and most sunglasses today have UV protection embedded in the lens rather than coated over it. The lens tint colour and shade intensity e.g. However, there is no relationship between the colour or darkness of your sunglasses/eyewear and the amount of UV protection. ![]() A common misconception about UV protection is that darker tint sunglasses provide extra UV protection.
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