UV filter protection is an essential part of sunglasses. The overexposure to ultraviolet light is thought to cause retinal damage and other eye problems, so protection from UV rays is an essential function of sunglasses. We recommend choosing sunglasses that offer 100% UV protection.
Ultraviolet rays are located just past the violet portion of the visible light spectrum and there are three different types: UVA, UVB and UVC.
• UVA: Longer wavelengths and passes through glass easily. These rays are known to cause premature ageing, wrinkles and sun spots. • UVB: Maybe the most dangerous rays, some of the rays pass the ozone layer some don't. • UVC: The strongest rays but Earth's ozone layer stops these from reaching the Earth