Why Filter Blue Light?
We live in a world surrounded by screens, spending on average 9 hours a day infront of a digital device, all of which emit blue light. Although evolution has helped us adapt to blue light produced by the sun, our evolutionary adaptations are irrelevant when staring at a screen for hours at a time. We can't evolve quick enough to keep up with technology, however our glasses are the solution to this.
The Effects of Blue Light
Blue light is a high-energy visible (HEV) light that is emitted by screens, and it may have a negative impact on our health. Studies show that overexposure to blue light may be linked to eye strain, increased risk of macular degeneration (AMD), and sleep disruption.
Researchers have found that HEV light - particularly in the 415 to 455 nm wavelength range - produces oxidative and phototoxic damage to the cornea and retina of the eye. Longer wavelengths of blue light have been found to be harmless to the eye. In fact, it regulates our circadian rhythm responsible for our sleep cycle and appears to contribute to physical and emotional health.
For more information on this please view this study published by Harvard here.
Blue Light and Sleep
As mentioned previously, blue light is essential for regulation of our sleep cycle, however, used in the wrong way, it can throw our sleep cycle out of rhythm. This is because of a hormone correlated with sleep called melatonin.
A study in rats has shown that just one minute of bright light during the sleep phase can reduce melatonin levels back down to daytime levels, leaving you fatigued.
About our Digiprotect™ Lenses
Our Digiprotect™ lenses have been designed specifically for those who spend a lot of time infront of screens and therefore are exposed to this harmful light. They are baked with a naturally occuring pigment that blocks wavelengths of 410 to 450 nm with a 80% efficiency and wavelengths of 450 to 480 nm with a 50% efficiency. The pigment has the added bonus of blocking ~90% of UV light, protecting your eyes from nature and screens!
This gives the lenses diverse properties, allowing them to be effective at blocking harmful light while also regulating night time melatonin levels. The pigment is almost unobservable allowing the lenses to be virtually clear.
The lenses are finished with an anti-reflective coating and a super-hydrophobic outer layer that repels dust and water, and reduces smudges. The AR coating reduces glare and unecessary feeback that otherwise, could cause undue eye stress and hinder vision.