Blue light therapy uses light to treat certain conditions on or just under the skin. It’s considered a pain-free procedure. Blue light therapy becomes photodynamic therapy when it uses a combination ...

Blue light is a high-energy part of visible light from the sun, screens, and light-emitting diode (LED) bulbs. Your cornea and lens don’t block blue light the way they block ultraviolet (UV) rays.

It's no news that spending long hours in front of a screen can have some serious effects on our health, from dry eye and headaches to messed up circadian rhythm and digital eye strain. Turns out, ...