blue blocking goggles Uvex

Product Notes:

Uvex Blue Light Blocking Glasses

The blue blocking glasses offered here are manufactured in the United States by Uvex, a division of Honeywell. They 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 ease eye strain by reducing haze and glare in bright outdoor settings.

As an independent reviewer notes in this video, the new ones are a little more on the yellow than the orange side than they used to be, such that they admit a little more light altogether, especially green light (with a 38% reduction in its intensity, compared to 47% for the original production models), but they do indeed still reduce blue light by nearly 99.9%.

These glasses also absorb up to 99.9% of UVA & UVB radiation, so they're suitable for use around suntan or curing lamps. They 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).

Style

The Uvex Skyper design is for regular wear and has adjustable temple lengths.

* PC lens, Uvextreme AF, Ultra-dura HC
* Certified to meet ANSI+ 2015 and CSA 2007 standards

Honeywell also formerly sold another Uvex model, a fitover type: the Ultra-Spec 2000 goggles, which had vents on the side and were designed to fit comfortably over your existing prescription or reading glasses. However, it is no longer in production, and its intended successor, the Uvex Astro Over-The-Glass (OTG) Blue Light Blocking Computer Glasses with SCT-Orange Lens, has also been discontinued, unfortunately.

Blue Blocking Sunglasses

Nathan Zassman

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 sleep 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 blockers' 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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