Topline. A new study concluded that blue light glasses probably have no greater effect on the eyes than non-blue light glasses, contradicting research that says they help with eye strain, sleep ...

Japanese traffic lights are blue instead of the green Americans know, but the reasoning involves some complex linguistic background and history.

Adding a blue light-filter to your eyeglasses won’t ease computer eye strain or protect your sleep, according to a new review, but other actions can help.