That means if you use these glasses when looking at a screen, especially after dark, they can help reduce exposure to blue light waves that can keep you awake. What are blue light blocking glasses?īlue light blocking glasses have filters in their lenses that block or absorb blue light, and in some cases UV light, from getting through. Prevent Blindness, a nonprofit dedicated to mitigating vision loss, also says that early research suggests that blue light can contribute to eye strain. So, what does my phone or computer screen have to do with this?Ĭompared to fluorescent and incandescent bulbs, LEDs can give off a significant amount of blue light.
On the other hand, blue light can help us overcome sleep issues by disrupting our usual circadian rhythm. While exposure to any light waves after dark delays our bodies' production of melatonin, blue light waves can be especially problematic because they keep us alert. But today, we're exposed to light all day and into the night. Read more: Quit the Melatonin: 7 Natural Insomnia Remedies That Are Betterīefore the advent of artificial light, the sun regulated our sleep schedules. When the sun goes down, the lack of light signals our bodies to start producing melatonin, the hormone responsible for making us fall asleep. We get plenty of blue light waves each day from the sun, but after dark we're still exposed to it from many artificial sources. Any source of visible light gives off blue light waves, whether it's the sun, a touchscreen or a light bulb.
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