Safeguarding Your Eyes from UV and Glare: Sunglasses FAQ
While a sunny day can lift spirits, the impact of sunlight on your eyes can be less than ideal. UV rays and glare pose various risks, from "snowblindness" to potential eye disorders. Here are common questions about sunglasses' role in protecting your eyes. For guidance on selecting the right sunglasses, contact Oasis Eyecare today at (780) 705-0135 today.
What are UV rays?
UV stands for ultraviolet, a spectrum band invisible to the naked eye. Ultraviolet light comprises UVA, UVB, and UVC rays. UVC rays are blocked by Earth's atmosphere, but both UVA and UVB can reach the eyes and potentially cause damage.
How does UV affect unprotected eyes?
UV rays can make proteins inside the lens become opaque or cloudy, leading to cataracts. Cataracts can impair night vision, color perception, and reading ability, and they cannot be reversed, only removed. UV exposure may also result in retinal damage, changes in eye tissues, and a temporary but uncomfortable "sunburn" of the cornea called photokeratitis.
How can I ensure my glasses protect my eyes?
Opt for glasses that claim to block at least 99 percent of UV rays (UVA and UVB). Look for the label "UV 400," indicating they block UV rays as small as 400 nanometers, offering 100 percent eye protection. Besides UV, protect your eyes from visible spectrum glare by choosing products that block 75 to 90 percent of visible light.
What are polarized lenses?
Polarized lenses are designed to filter specific glare types that often reflect upward from horizontal surfaces when sunlight bounces off them. Recommended for activities like boating, fishing, skiing, golfing, jogging, and driving, most polarized lenses are labeled as such.
What sunglass options are available?
You have several choices, such as non-prescription clip-on or wraparound glasses that fit over your corrective lenses. Alternatively, you can opt for prescription sunglasses or glasses that darken in bright light.
What additional protection should I consider?
To minimize light, including harmful UV, entering through the sides or top of your sunglasses, wear a broad-brimmed hat. If you use prescription eyewear, think about UV-blocking contact lenses in your prescription. These can be worn with non-prescription sunglasses for comprehensive eye protection.
Don't let sunlight compromise your eye health. Choose sunglasses that provide the necessary UV and glare protection, ensuring your eyes stay safe while you enjoy the sun.