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:
“But real action is in silent moments. The epochs of our life are not in the visible facts of our choice of a calling, our marriage, our acquisition of an office, and the like, but in a silent thought by the way-side as we walk; in a thought which revises our entire manner of life, and says,Thus hast thou done, but it were better thus.”
—Ralph Waldo Emerson (18031882)
“But no. Too soon I voun my charm abroke.
Noo comely soul in white like her
Noo soul a-steppen light like her
An nwone o comely height like her
Went by; but all my grief agean awoke.”
—William Barnes (18011886)