Not all lighting is easy on the eyes. Flickering fluorescent lamps give you a headache, powerful rays from the sun make you search for sunglasses, the harsh computer screen at night leaves you seeing spots.
It probably didn’t come as a surprise last month when we published results of a recent study revealing certain artificial indoor lighting has a negative impact on sleep cycles.
The study found that light with a cool color temperature affects a certain blue-sensitive photoreceptor that targets our biological clock. So, to avoid losing sleep because of your lights, we recommended sticking to lighting with a warm color temperature (2800-3200K) after dusk – and dimming the lights before bed!
However, that recommendation didn’t address the bulk of the problem: the glare from computer screens, smartphones, and tablets. If you’re like most people, you check your e-mail and catch up on news articles in the hour or two before you go to bed. The color temperature from those devices will kill your efforts to stay away from sleep-inhibiting lighting. (more…)