Blue-light-filtering lenses may not reduce eyestrain or sleep problems

[jmyrlefuller]

https://www.scientificamerican.com/article/do-blue-light-glasses-help-with-eyestrain/

Do Blue-Light Glasses Help with Eyestrain? An analysis of previous trials suggests blue-light-filtering lenses may not reduce eyestrain or sleep problems
by Karen Kwon
August 24, 2023

Blue-light-filtering glasses have become an increasingly popular solution for shielding our eyes from electronic screens’ near-inescapable glow—light that is commonly associated with eyestrain and poor sleep. In recent years they’ve even become fashion statements that are endorsed by celebrities and ranked in style guides. But a recent review paper shows such lenses might not be as effective as people think.

The paper, published last week in the Cochrane Database of Systematic Reviews, analyzed data from previous trials that studied how blue-light-filtering lenses affect vision fatigue, sleep quality and eye health. The study’s authors found that wearing blue-light filters does not reduce the eyestrain people feel after using computers. The results were inconclusive on whether wearing these specialized lenses before bedtime improves sleep quality.

(snip)

 The biggest source of blue light is the sun; digital devices’ screens emit less than 1 percent of the amount of blue light that people get from solar rays. Plus, there’s no known physiological mechanism that links blue light to eye fatigue, he says.

(excerpted)

[roamer_1]

Being particularly sensitive to this issue... 'Night setting' that eliminates blue light from the computer means nothing. Blue-blocking glasses do nothing.

Nothing.

What works is to set a time, have an alarm go off, and know you will shut electronics OFF at that time.

For me, that includes the TV (which is just a big-ass monitor) and all electronic lights in the house.
If I still need light for some reason, a candle or kerosene lantern is employed.

Take that from a canary in the coalmine.