What You Should Know About UV400 Sunglasses
While shopping for sunglasses online and in stores, you’ve probably seen tags or descriptions on sunglasses claiming some percentage of UV protection but didn’t really understand what UV protection is all about or the importance of shielding your eyes from harmful rays. In this article, we will be talking about the harmful rays that can damage your eyes, how to protect your eyes from these rays, how much protection is enough and what UV 400 really means.
Ultraviolet or UV rays are electromagnetic radiations from the sun. While you can’t see it, UV rays/light penetrates Earth’s atmosphere and reaches your skin and eyes in the form of UVA and UVB waves.
The sunlight that reaches us consists of two harmful rays: UVA and UVB. The first (UVA) is the most common and has been linked to the development of cataracts and macular degeneration, while the second (UVB) helps boost our vitamin D levels but is the prime cause of sunburn. These harmful rays can do nasty damage in any season, and there’s no place on earth where you’re immune, which is why sunglasses are essential. Not just any sunglasses will do though, you need UV400 sunglasses.
UV400 is the category which blocks all light rays with wavelength up to 400 nanometres. Sunglasses with this level of protection block an even wider spectrum than the CE and British Standard models, making them the ultimate protection for your eyes. That is, the designation UV400 with guaranteed UV protection protects against harmful UVB and UVA radiation.
- Category 0. It is a clear or very light tiny lens used for impact protection. You can see it in many safety eyewear glasses on some construction sites. Category 0 also provides a minimal reduction of sun glare and slight UV protection.
- Category 1. It is a typical yellow, pale, or light tint sunglasses. You can’t use it in sunny conditions, but it is excellent for overcast skies. This category can only provide limited protection against sun glare and UV protection. Thus, you can’t use it when driving in at night or under dull light conditions.
- Category 2. It is a typical orange, rose, blue and red lens. You can get some adequate protection against sun glare and UV protection. Thus, it is safe to use driving or strolling in at night or under dull light conditions.
- Category 3. It is suitable for strong sunlight and the most common kind of lenses. It consists of brown and grey-colored lenses. You can get high protection against sun glare and UV protection. You can use these sunglasses for leisure and fashion.
- Category 4. It consists of very dark grey or brown lenses. You can use it in the mountains or deserts with intense sunlight. It is also ideal to use in places with high glare conditions, but not suitable for road use.
- Category 5. It includes sports sunglasses.
“When choosing your sunglasses, Category 3 is your best option. It would be best if you recognized the tint to enhance the colors that you see. This way, you can look at more vivid images as you wear sunglasses. Other tint colors can also help reduce glare and block the sunlight. Lens categories have nothing to do with UV protection.” – GM Sunglasses
The risk of damage to our eyes and skin from solar UV radiation is cumulative: the danger continues to grow the more time you spend in sunlight over your lifetime. This starts at an early age. Children are at higher risk for UV damage to their eyes because they tend to spend more time outside. Therefore, it is best to invest in sunglasses that are labelled UV400 helps to block 99 to 100% of UV light and protect you and your loved ones’ eyes from UV rays.
Things you need to know about UV400 Sunglasses
- The darkness of your sunglasses has nothing to do with UV protection. It’s possible to buy a pair of dark-tinted shades that do not provide adequate UV protection. Getting these dark sunglasses that don’t block harmful rays will only help reduce your need to squint in bright light, but that’s about it. So while they may filter out ambient light and glare, the additional exposure to UV rays increases your risk for cataracts, macular degeneration and even development of ocular melanoma-a rare cancer.
- If you spend a lot of time outdoors, especially around water, consider wrap-around sunglasses that protect from UV rays that come in from the side. This design will also stop the wind that makes your eyes dry.
- Polarization has nothing to do with UV light absorption. Check the label or description of any sunglasses you want to purchase to make sure the lenses provide maximum UV protection.
- You can tell whether sunglasses offer UV protection by checking if the frame features the CE or UV400 mark. Look for labelling that either says “100% protection against both UVA and UVB” or “100% protection against UV 400”. If you’re shopping online, it should be contained in the description of the product.
- If you wear prescription glasses, you might consider adding a UV coating to your lenses so that your eyes are protected at all times.
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