We get asked all the time why our BlueFree lenses are yellow, we created our blue light blocking lenses using basic science and a patent pending technique to actually block--not filter blue light. The difference? Near-clear lenses only filter a percentage of blue light emitted from our devices and any LED light source. Only yellow can actually block blue, our specific hue of yellow is built to not just block blue light but to provide maximum health benefit by addressing the blue light spike created by fake LED light. This spike is measured across the light spectrum at 455nm, only yellow can block it.
Now, science continues to explain this more clearly. In a study just published by the Cochrane Database of Systematic Reviews, found that near clear blue light glasses may not provide relief or protection from computer-induced eye strain nor improve sleep.
This systematic review found that blue‐light filtering spectacle lenses may not attenuate symptoms of eye strain with computer use, over a short‐term follow‐up period, compared to non‐blue‐light filtering lenses. Further, this review found no clinically meaningful difference in changes to CFF with blue‐light filtering lenses compared to non‐blue‐light filtering lenses. Based on the current best available evidence, there is probably little or no effect of blue‐light filtering lenses on BCVA compared with non‐blue‐light filtering lenses.
The studies author and postdoctoral research fellow, Dr. Sumeer Sing states, “Filtering out higher levels of blue light would require the lenses to have an obvious amber tint, which would have a substantial effect on color perception,”
We ask that you read our blog for more about Why Yellow Matters, email us with any questions you may have, we're here to help.