In ophthalmology, high-energy visible light (HEV light) is high-frequency light in the violet/blue band from 380 to 500 nm in the visible spectrum. HEV light has been implicated as a cause of age-related macular degeneration.
Some sunglasses are now designed specifically to block HEV.
Read more about High-energy Visible Light: Blue-light Hazard
Famous quotes containing the words visible and/or light:
“When we consider the vast distance of the known and visible parts of the world, and the reasons we have to think, that what lies within our ken is but a small part of the universe, we shall then discover an huge abyss of ignorance.”
—John Locke (1632–1704)
“Y’know plenty of people, in their right mind, thought they saw things that didn’t exist, y’know, like flying saucers. The light was just right, and the angle and the imagination. Oh boy, if that’s what it is, then this is just an ordinary night. You and I are going to go home and go to sleep and tomorrow when we get up that sun’s gonna shine. Just like yesterday. Good ol’ yesterday.”
—Theodore Simonson. Irvin S. Yeaworth, Jr.. Steve Andrews (Steven McQueen)