Our lenses block all blue light

There are two concerns regarding blue light from LEDs and screens which have been publicised in recent years.
1. That blue in the range 400-455 nanometers may be leading to eye strain and macular degeneration. The evidence for this being the case is not strong. Many clear lenses and special coatings can absorb this portion of the spectrum however.
2. The second case is circadian rhythm disruption due to exposure to blue light in the range of 460 to 500 nanometers.
The evidence for this is very strong with melatonin levels being measured from blood and urine during clinical studies which showed that melatonin production can be reduced by up to 70 percent.
Melatonin is the hormone which actually helps us go to sleep and stay asleep, so it’s critical not to disrupt it production before bed time.

Clear vs. Proper Blue Blocking Lenses

Proper blue blocking lenses (with a tint, usually amber or orange):

  • Block a much larger portion of the blue spectrum, especially the circadian-disruptive wavelengths (460–500 nm).
  • Provide genuine support for those who want to improve evening light hygiene and protect sleep quality.
  • Do have a visible tint — but this is what makes them effective.

Prescription Blue Blocking Glasses

At Designed Eyes we can make prescription lenses with proper blue blocking technology. You don’t have to choose between vision correction and eye/sleep protection — we can combine both in one pair.
We can make them in your choice of lenses and frame. Single vision, enhanced near, progressive (multifocal), bifocal or even trifocal.
All lens shaping and tinting is done on site in Rosebud.
We then verify each pair that we tint with a spectrometer to ensure that the tint performs as it should, blocking all wavelengths below 500 nanometers. In fact most light from 550 nanometers and below is completely blocked.
In the images below, the one on the left shows the typical spectroscopy from LED lights or a computer screen. Note the percentage of blue light.
The image on the right shows the reading from the same light but filtered by blue blocking glasses made by us!