The Importance of UV-Resistant Sunglasses
UV stands for ultraviolet light which we cannot see with the naked eye. UV400 provides nearly 100% protection from harmful ultraviolet light rays. UV400 also screens out 75% to 90% of visible light from the sun, which penetrates the Earth’s atmosphere and reaches your skin and eyes in the form of UVA and UVB rays. This high level of sun protection is important because your risk of developing eye conditions such as macular degeneration, cataracts and photo-keratitis will increase more rapidly over time if you don't wear the proper sunglasses.
It is not because your lenses are dark that you will be protected against UV. Tinting only affects visible light. Before buying anything make sure that the European CE standard and the reference UV400 are featured on your sunglasses, these require manufacturers to meet construction and performance requirements to offer you lenses that block all light rays with a wavelength of 400 nanometres, which covers all UV rays.
All of Artemoda's sunglasses are guaranteed UV400 for 100% protection.