Do blue light-blocking glasses reduce eyestrain? Review suggests no

young man wearing glasses and standing in front of a panel of large computer monitors displaying code

Glasses that block blue light may not actually reduce eyestrain from looking at computer screens.

That's according to a new review, published Thursday (Aug. 17) to the Cochrane Database of Systematic Reviews, that assessed 17 randomized controlled trials of blue light-blocking glasses that included nearly 620 people in six countries. Based on these trials' results, glasses that "block" or "filter" the blue light emitted by computer screens don't appear to prevent or relieve eyestrain any better than glasses that don't filter blue light.