Wearing blue light blocking glasses might actually make some people sleep a little less, even though they’re supposed to help. Both how people felt and sleep tracker data showed slightly shorter sleep, but the difference wasn’t strong enough to be sure it wasn’t just chance.

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Pro

0

Against

Evidence from Studies

Supporting (1)

46

Community contributions welcome

46

Effect of evening blue light blocking glasses on subjective and objective sleep in healthy adults: A randomized control trial.

Randomized Controlled Trial

Human

2021 Aug

The study found that people wearing blue light blocking glasses in the evening slept slightly less than when not wearing them, even though it wasn’t a big enough difference to be certain it wasn’t due to chance. This matches the claim that these glasses might unexpectedly reduce sleep time.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Effect of evening blue light blocking glasses on subjective and objective sleep in healthy adults: A randomized control trial.

Score: 46

DOI: 10.1016/j.sleh.2021.02.004

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Wearing blue light blocking glasses after 6 PM for a week doesn’t actually help healthy adults sleep longer or more soundly, according to wrist-worn sleep trackers.

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Wearing blue light-blocking glasses, using screen filters, adjusting room lighting, and managing screen time may help reduce the negative effects of blue light on your sleep and body clock — but we still need more research to be sure how well these work for everyone.

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