blue light is everywhere in our world it used to be that the only source of blue light was from the sun now we have brought blue light inside by way of digital screens (found on TV's smartphones, computers, laptops, tablets, and gaming systems) electronic devices LED and fluorescent lighting. the blue light emitted by screens reaches deeper into the eye and its cumulative effect can cause damage to the retina heavy exposure to blue light can cause symptoms of eyestrain eye fatigue migraines and