Modern lifestyles are multifaceted, but one thing is for sure: people are spending more time exposed to artificial lighting than ever before. This is largely due to advances in technology, such as the LED revolution and digital devices, as well as longer work hours and greater access to global information.
One major downside of more time inside and in front of screens is the potential of suppression of melatonin secretion leading to circadian rhythm disruption, which can, in turn, lead to numerous health concerns. With light itself being a vital cue for entraining vital biological functions, blue light blocking glasses are a simple and effective solution for managing your light exposure and supporting your natural circadian rhythms. The key to choosing the right blue light blocking glasses comes down to lens color and functionality.
- Yellow lenses block a maximum of 75% of blue light. Note that yellow lenses do NOT block 100% of blue light because not ALL blue light is “bad”; your body needs some blue light during the daytime in order to remain alert and active.
- Red lenses can block up to 100% of blue, green and violet light. As the sun descends below horizon each night, the sky emits warm colors until it’s completely dark out. Red lenses create a similar effect by essentially dimming the lights, even if you still have them on in the hours leading up to bedtime. Still, not all red lenses are the same. Ideally, you want to find lenses that block as much blue, green AND violet light as possible since each of these ranges have been shown to disrupt sleep.