Uv protective sunglasses

One of the causes of some of the most serious eye diseases is ultraviolet light. Depending on the frequency and wavelength, ultraviolet light is divided into two categories: ultraviolet A and ultraviolet B.
As A natural eye protection mechanism, the cornea of the human eye absorbs all UVB rays and most UVB rays. However, A portion of UVA does reach the lens of the eye. Prolonged exposure to UVA can lead to cataracts, and small amounts of UVA that pass through the cornea and reach the retina can lead to macular degeneration, the leading cause of blindness in people over 65. Long-term exposure to intense UV light can lead to cancer of the eye or actinic keratitis, which is a burn of the retina. This condition often occurs outdoors on sunny days after snow in winter, and the snow surface reflects the sun's glare, so it is often referred to as snow blindness.
Sunglasses have a good UV protection coating that eliminates UV radiation, and you must make sure that your sunglasses are 100 percent able to filter out both types of UV. The label of the sunglasses should indicate what level of UV protection the sunglasses provide, but you need 100% protection.