Too much ultraviolet (UV) radiation can seriously harm your eyes. It’s linked to cataracts, macular degeneration, and even skin cancer around the eyes, so sunglasses aren’t just a style choice—they’re essential.
Many people assume UV is harmless, but it’s not. The right sunglasses can protect your eyes. Read on to learn more.
Understanding UV Radiation
You probably put on sunscreen for your face, but your eyes need protection too. UV rays come from the sun and are invisible. They’re divided into UVA, UVB, and UVC. UVC is mostly blocked by the atmosphere, but UVA and UVB reach the ground.
Too much UV exposure can damage the eyes and the skin around them. Short-term effects include photokeratitis, which is basically a sunburn of the cornea. Long-term exposure raises the risk of cataracts—the clouding of the eye’s natural lens—which causes blurry vision, trouble in low light, and may eventually need surgery. While aging is the most common cause of cataracts, UV exposure adds to the risk.
UV can also reflect off water, sand, and snow, increasing exposure. That’s why sunglasses are important even on cloudy days or during winter sports. For proper protection, choose sunglasses that block 100% of UVA and UVB rays. Some also filter blue light, which can reduce eye strain and fatigue.
Types of Sunglasses
Here are three popular lens types and what they do:
– Polarized: These have a special filter that cuts glare from reflective surfaces like water, snow, and pavement. They improve clarity and reduce eye strain.
– Mirrored: A reflective coating on the outside reduces the amount of light entering your eyes, making them useful in very bright conditions like snow sports. They also offer a stylish look.
– Photochromic: These lenses darken in sunlight and lighten indoors, which can eliminate the need for separate prescription sunglasses and regular glasses.
What to Consider When Choosing Sunglasses
Picking the right pair involves more than looks. Think about:
– UV protection: Make sure the lenses block 100% of UVA and UVB. Blocking blue light can help with eye fatigue.
– Lens color: Different tints have different benefits. Grey reduces brightness and glare without changing colors. Brown enhances contrast and depth perception. Green also improves contrast and reduces glare—popular with golfers.
– Frame material: Frames affect weight and durability. Plastic frames are light and affordable; metal frames are durable and classic; nylon frames are lightweight and tough—good for sports.
– Fit and comfort: A snug fit that doesn’t slide is important. Consider weight and how they feel on your face. Try them on before buying.
Product Standards
Look for sunglasses that meet recognized standards, such as the British Standard BS EN ISO 12312-1:2013. This standard sets guidelines for lens optics, UV protection, and frame strength and durability.
Conclusion
Good sunglasses are an investment in your eye health. By choosing pairs that offer full UV protection and a comfortable fit, you can enjoy time outdoors without risking your eyes. Stay safe and enjoy the sun with confidence.