Friday, November 4, 2016

Hacking Blue Light

I have been wearing my red sunglasses at night for almost two years. They block the melatonin blocking blue light as well as UVA and UVB. Unfortunately, they are too darkly tinted to drive with at night, as are my genuine BluBlocker Stargazers. So, I had been experimenting with these orange tinted ZeroUV which have a lighter tint, but seemed to cut down the blue light as well as all of the UVA and UVB spectra.

I recently received a pair of Swanwick glasses in my Dave Asprey (now Biohacked box). They have a much brighter tint and are more suitable for driving at night, or a rainy day when this photo was taken. 

Swanwick recommends wearing their blue blocking glasses whenever you will be looking at screen for an extended period of time as does the Blue Light Exposed website. 

What is Wrong with Blue Light?

Blue light exposure has acute (sudden and transient) and chronic (long-lasting permanent) symptoms. First, there is the disruption of melatonin production at night, making it hard to fall asleep. It turns out that this has nothing to do with the optic nerve. Your eyes have melanopsin, a photopigment which is able to detect light between 420 and 440 nanometers according to this NIH article which means that your eyes can detect this narrow band blue light regardless of sight.

Almost everyone  is aware of the harmful affects of UVA and UVB radiation on your eyes and skin. Ultraviolet light, by definition, is a shorter wavelength than violet light, closely preceded in wavelength by blue light. As this Pub Med article explains, animal studies have confirmed the connection between blue light and Age-related Macular Degeneration and it is only a matter of time before the confounding factors are eliminated in human models. 

What are Some Sources of Blue Light?

Blue light has permeated every aspect of our lives. The obvious sources of blue lights may be the screens of computers, mobile devices and televisions, but the lights in your home and office could also be to blame. Florescent and LED lights, while more energy efficient, tend to emit more blue light than traditional incandescent or halogen lights. Also, more and more LED and HID headlights are appearing on cars.

Especially with the days growing shorter, I will be wearing my "Swannies" on my commute. Do your vision a favor and help yourself fall asleep faster with a pair of blue blocking glasses. Need a prescription? Companies like Lens Crafters and Gunnar appear to offer blue blocking corrective lenses and there are likely others.

Stay well engineered,

These statements have not been evaluated by the FDA. These statements or products referenced are not intended to diagnose, treat, cure, or prevent any disease.


  1. A genuine case of this is a couple of pants. The pants ingest the entirety of the light with the exception of the blue light, which is reflected by the pants. affordable blue light glasses

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