High energy visible light (HEV) refers to very specific range of wave lengths which collectively are known as blue light. Blue lights serve several important purposes for human beings but only a fraction of this HEV is necessary for color perception.
Blue light (HEV) is being introduced into our lives at an increased rate every year and it can harm our eyes. The potential hazards may include diminished visual performance and contribution to aged related macular degeneration. Blue light can come from fluorescent light bulbs, LED television and digital devices which include hand held tablet computers, smart phones and modern computer screens.
Blue light is the highest energy light visible to the human eye. It is the shortest wave light in the visible light spectrum. We now have treatments to minimize the harmful effects of blue light.