Rimless Reading Glasses - Blue Light Blocking Frameless Readers with Spring Hinge for Women Men 2 Pairs 2.50

Product description Why blue light is harmful to glasses ？ Blue light is a blue light with wavelength between 380-500nm. Blue light is high in energy and can directly penetrate the lens to reach the retina at the bottom of the eye, which can cause irreversible damage to people. Mild cases are dry eyes, itchy eyes and poor sleep. Severe cases can lead to damage and lesions of macular cells, even leading to eye cancer and blindness! I don't have eye discomfort, do I need blue light protection? Blue light damage to human eyes is chronic. Your eyes although there is no blurred vision, can not see things, or even more serious phenomenon. But long time use of 3c digital products will feel a slight discomfort of dry or sore eyes. Blue light damage to the eyes can not be reversed. If you often use computers, cell phones and other digital products. We recommend you to reduce the use of these products while taking protective measures.