How important is wearing sunglasses? Sunglasses are a great fashion accessory, but their most important job is to protect your eyes from the sun's ultraviolet (UV) rays. Some of the sun's effects on the eyes include: Cataracts, a clouding of the eye's lens that can blur vision. An estimated 20% of cases are caused by extended UV exposure. Our replica sunglasses are original designed as the same as authentic sunglasses, made in our own factory line comes with box and brand cards.