Yes, most sunglasses do filter UV (ultraviolet) radiation.
Most sunglasses manufactured today include UV protection. This protection is typically embedded within the lens material, rather than simply coated on the surface. Reputable brands will clearly indicate the level of UV protection offered by their sunglasses.
How to Check for UV Protection
Look for labels or tags that state one of the following:
- 100% protection against both UVA and UVB rays.
- 100% protection against UV 400. (UV 400 means the lens blocks all light rays with wavelengths up to 400 nanometers, which covers all UVA and UVB rays).
Why UV Protection is Important
Exposure to UV radiation can damage your eyes, potentially leading to conditions such as:
- Cataracts
- Macular degeneration
- Photokeratitis (sunburn of the cornea)
Wearing sunglasses with adequate UV protection is therefore crucial for maintaining good eye health.
Choosing Sunglasses
When purchasing sunglasses, prioritize UV protection over the darkness or color of the lenses. Even clear lenses can offer 100% UV protection. Make sure to check the label or ask a sales associate to confirm the level of protection before buying.
