The High Energy Visible (HEV) blue-light emitted by all digital screens can trick our brains into thinking it’s the middle of the day. That is because HEV light is the same type of light that is emitted by the midday sun.
Millions of years of evolution have trained our brains to be most active and alert in the middle of the day. In the modern age, when we are staring at HEV light before bed-time, our brains are tricked into becoming more alert, which prevents from falling asleep easily and naturally and not getting a good nights’ rest.
Blue-light blocking computer screen glasses block specific frequencies of HEV blue-light, so that we can now use our screens safely before bed time, and still get a good night sleep.