WHAT IS BLUE LIGHT AND WHAT IS IT DOING TO OUR EYES?<br><br>Anti-blue light screen protectors protect against Blue light which is also known as HEV ( high energy visible light ), it is emitted from LED screens from devices such as mobile phones.<br><br>As device makers aim to achieve higher resolutions and vibrant screens, blue light is used as the primary color to light up the screens. <br><br>Harmful blue light can not be absorbed and shines through the retina to cause damages to macular.