Blue light on the visible light spectrum is shorter in wavelength (380 - 500 nanometers), having the highest energy of all visible light.
It’s found in sunlight and necessary for keeping us energized and awake, also regulating our circadian rhythm. The issue arises though when blue light comes from artificial sources in large unwanted quantities.
And the proliferation of electronics with screens, as well as energy-efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown.
WHAT DOES BLUE LIGHT DO TO YOUR EYES?
Blue light reaches deep into the back of the eye (further than UV rays), which over time can cause damage to the retina — an important part of the eye that enables vision.
The naked eye’s cornea and lens are unable to block this harmful light, that’s why the blue light blocking glasses becomes very important.
The Dark Side of Blue Light
Why EFE screen blue filter?