Good Morning America video discussing
The two types of blue light blocking glasses offered here are manufactured in the United States by Uvex, a division of Honeywell. They both have SCT-Orange tinted lenses to filter out blue, violet, and some green light, which not only provides that benefit of facilitating going to sleep when used before bed in relatively dim light, but can also reduce haze and glare in bright outdoor settings. They also absorb up to 99.9% of UVA & UVB radiation, so are suitable for use around suntan or curing lamps. Both are also safety glasses in their own right (with an anti-fog coating, and a wraparound style to protect your eyes from small particulates or projectiles, for example). The Skyper is for regular wear, while the other Ultra-Spec 2000 model is designed to fit comfortably over your existing prescription or reading glasses. Both styles of low-blue glasses have adjustable temple lengths.
* PC lens, Uvextreme AF, Ultra-dura HC
* Certified to meet ANSI+ 2015 and CSA 2007 standards
Blue Blocking Sunglasses
One of the most exciting areas of my personal research was learning about the relationship between blue light and melatonin production, and how blocking blue light at night can improve sleep and our health.
The pineal gland, the gland that secretes serotonin and melatonin, is sensitive to blue light. If blue light is present, melatonin production is suppressed. We want blue light during the daytime, as blue light stops melatonin production (which we want it to do in the morning) and stimulates serotonin (the feel good brain chemical) production.
Research has proven that by being exposed to blue light in the evening, we turn off melatonin production, and that by wearing special amber or orange glasses designed to absorb blue light, we can increase melatonin production. Normal lighting consists of red, blue and green light. It's the blue portion of the light that we want to filter from our eyes, as it is the blue color that turns off melatonin in the brain.
If you think about how we evolved in nature, in the evening, as the sun sets, the longer blue wavelengths are scattered by the atmosphere, and we see a red or orange sunset. The blue light is filtered out naturally by the atmosphere. Until the invention of artificial light, this was not a problem. We have been programmed through thousands of years of evolution to see light without the blue component in the evening.
Ideally, we want to extend the melatonin cycle to between 9.5 and 10 hours each night. By wearing blue blocking glasses for an hour or two before bed, we start the flow of melatonin sooner. The result is improved sleep, but another major benefit is that low melatonin levels are also associated with up to a 60% increase in cancer. This has been proven by about 40 years of research.
Wearing blue blocking sunglasses is the least expensive method of improving sleep quality, and I believe everyone should wear these glasses. They can also be used to help reduce jet lag if you travel across time zones.
I have evaluated over 30 types of glasses that claimed to block blue light, and I'm proud to offer glasses that effectively block blue. Most of the so-called blue blocking sun glasses available on Amazon and Ebay do not work properly, only blocking ultra violet, but not the important blue wavelengths that suppress melatonin production. You can enhance the effect of blue blocking glasses (and improve sleep even more) by ensuring you are consuming the amino acid L-Tryptophan, as found in products like Zenbev.
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PLUs for Orange/Low-Blue Glasses:
Uvex Skyper style (left): 19422
Uvex Ultra-Spec Fitover type (right): 19421