Blue light filter glasses – Science or Scam?

Blue light filter glasses are marketed as protecting your eyes from damage, reducing eye strain, and helping you sleep. But do they really work? In this video, Dr Susan Oliver and Cindy the dog go back to the science and look at the evidence.

Buy me a coffee (or Cindy a treat)
https://www.buymeacoffee.com/SusanAndJulie

Link to previous sleep and immunity video:

https://youtu.be/D8naTskte6U

Links to data:

Low-energy light bulbs, computers, tablets and the blue light hazard
https://www.nature.com/articles/eye2015261

Blue‐light filtering spectacle lenses for visual performance, sleep, and macular health in adults
https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013244.pub2/full

Do Blue-blocking Lenses Reduce Eye Strain From Extended Screen Time? A Double-Masked Randomized Controlled Trial
https://www.ajo.com/article/S0002-9394(21)00072-6/fulltext

Blink Rate Measured In Situ Decreases While Reading From Printed Text or Digital Devices, Regardless of Task Duration, Difficulty, or Viewing Distance
https://iovs.arvojournals.org/article.aspx?articleid=2785357

Blue light from light-emitting diodes elicits a dose-dependent suppression of melatonin in humans
https://journals.physiology.org/doi/full/10.1152/japplphysiol.01413.2009

Exposure to Room Light before Bedtime Suppresses Melatonin Onset and Shortens Melatonin Duration in Humans
https://academic.oup.com/jcem/article/96/3/E463/2597236

Light level and duration of exposure determine the impact of self-luminous tablets on melatonin suppression
https://www.sciencedirect.com/science/article/abs/pii/S0003687012001159

How to use blue light filter on PC, iPhones/iPads, and Android devices
https://au.pcmag.com/health-fitness/48890/how-to-stop-blue-light-from-disturbing-your-sleep

How to use a blue light filter on your PC or Mac
https://www.digitaltrends.com/computing/how-to-use-a-blue-light-filter-on-pc-mac/