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:
“We all agree now—by “we” I mean intelligent people under sixty—that a work of art is like a rose. A rose is not beautiful because it is like something else. Neither is a work of art. Roses and works of art are beautiful in themselves. Unluckily, the matter does not end there: a rose is the visible result of an infinitude of complicated goings on in the bosom of the earth and in the air above, and similarly a work of art is the product of strange activities in the human mind.”
—Clive Bell (1881–1962)
“A light heart lives long.”
—William Shakespeare (1564–1616)