Folding Reading Glasses - Foldable Portable Readers For Men Women With Case 2 Pairs 1.25

Product description Beautiful and compact glasses case Press lightly to open the lid, take out the folded glasses. Store them in a box when not in use, it can protect the glasses from damage. Very useful! Black Red Blue Brown Foldable hinge Sturdy and durable 3-section telescopic mirror legs Retracts freely Portable case Press lightly to open the lid 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.