4 Pack Reading Glasses Blue Light Blocking for Men Women, Rectangular Frame Computer Readers with Spring Hinge, Anti Eyestrain/UV Ray Eyeglasses (2.0x)

Product description Blue light is divided into harmful blue light and beneficial blue light. Harmful blue light can cause eye discomfort. The beneficial blue light can promote the secretion of melatonin, allowing you to have a better sleep. If the beneficial blue light is over-blocked, it will aggravate visual fatigue. JAWSOCK anti-blue light reading glasses, only block harmful blue light, retain beneficial blue light.