Like your skin, your eyes need eye screen against UV exposure. Numerous studies show that exposure to bright sunlight (not early morning and late evening sunlight’s) may increase the risk of developing cataracts and age-related macular degeneration, leading causes of vision loss among older adults. UV exposure, wind and dust can also cause pterygia, benign growths on the eye's surface.
Everyone needs to protect your eyes. So when we go out in bright sunlight, we need to wear sunglasses.