The lens material of sunglasses will age over time, and improper wearing habits will also cause damage to sunglasses, and wearing damaged sunglasses for a long time will cause eye damage.
For example, worn lenses are prone to dispersion and other phenomena. Wearing such sunglasses can make people's eyes feel tired and hurt their eyes.
Such unqualified sunglasses can not only block the injection of ultraviolet rays, but also because the transparency of the colored lenses is seriously degraded, the eyes are like looking in the dark room after wearing, but the pupils become larger, and the unblocked ultraviolet rays are emitted. Into the eye, the eyes are damaged, long-term wear can cause solar keratitis, corneal endothelium damage, fundus macular degeneration and other diseases.