Dec 19, 2013 · Introduction. Awareness of ultraviolet (UV) radiation damage to the skin has risen substantially over recent decades, and effective measures have been implemented to improve UV protection of the skin. 1 – 3 Although evidence has been accumulating that the eye too is vulnerable to UV damage, a comprehensive generally accepted definition of a sun protection factor for the eye (similar to a May 27, 2017 · Polarized lenses can lessen your risk of damage to your eyes from the sun's UV rays.‌. You may get damage to your eyes without even realizing it. Over time, the damage adds up and increases your Mar 16, 2020 · The answer lies within the numbered rating, and the highest UV protection rating offered is UV 400. According to the American Academy of Ophthalmology, you should choose sunglasses that block 99% to 100% of UVA and UVB rays, and UV 400-protected sunglasses do this. While UV rays with shorter wavelengths may have higher energy levels, most of these rays are blocked by the ozone layer. Approximately 40% of solar UV irradiance that reaches the earth lies in the UVA range between 380 and 400 nm. To fully protect your eyes against the potentially harmful effects of UV, your lenses should block rays up to 400 nm. Mar 9, 2022 · UV400 protection. UV sunglasses are sunglasses that block UV rays from reaching your eye. There are different percentages of UV protection. Ideally, it would be best to aim for UV400 sunglasses, which block 100% UV rays. With UV400 protection, you can eliminate UV exposure to your eyes, making sure your eyes are well-protected and not at risk. Jun 21, 2023 · Look for a label that says either of these two things: 100% protection against both UVA and UVB. 100% protection against UV 400. If you're uncertain about your sunglasses —or those fun pairs you bought online for the kids—simply take them to an optical shop, where they can be tested in a photometer. Most opticians will test them for free Fashion lovers will see longterm benefits. The best sunglasses offer ultraviolet protection while serving serious style, like these Chloé Myrte shades with 100 percent UV protection. “Ultraviolet (UV) protection of the eyes is so important because UV damage is cumulative and irreversible,” explains Justin Bazan, optometrist and medical CHrr.

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