According to a new study by the Journal of Adolescent
Health, the blue glow from televisions and other screens effect the
natural mechanisms that help us to fall asleep at night. It can be
difficult to wind down after a day of glaring into a computer
screen but blocking the blue wavelengths which are absorbed from
screens can help restore natural night-time sleepiness.


A pair of spectacles known as
"blue-blocker" glasses filter out the wavelengths of light in the
blue portion of the visible spectrum, this allows for the hormone
melatonin, which promotes sleepiness, to naturally rise in the
evening which the blue rays can often stop. The brain should begin
to slow down and shift into sleep mode during the evening and
exposure to the blue lights keeps the brain alert and


Those who wear prescription glasses
are often given the option to have "blue-blocker" built in as part
of their prescription, do you have tailored glasses for computer
use? We'd like to know, get in touch on Facebook or Twitter.

Source: Journal of Adolescent
Health, online October 3, 2014.