Blue Light

Plain-English guides to blue light — what it does to your sleep and eyes, when it helps, when it hurts, and what’s actually worth doing about it.

Clear vs amber-tinted blue light blocking glasses comparison illustrating how lens color affects light filtering science
Blue Light

Do Blue Light Blocking Glasses Work? We Examined the Evidence

October 17, 2023

Smartphone with red screen beside text reading Night Shift Isn't Enough, highlighting blue light science limitations
Blue Light

How to Automate Red Light Mode on iPhone (Triple-Click Trick)

May 3, 2023

Blue light rays blocked by orange-tinted glasses with text: That blue pen isn't even blue — science of blue light filtering
Blue Light

3 Ways to Test Blue Light Glasses (The “Pen Test” is Fake)

April 22, 2023