Studies have shown high prescription rates for blue-light-filtering eyewear in several countries, including India, the U.K. There have been a number of studies that have found exactly the same thing, that there’s just no evidence that blue-blocking lenses have any effect on eyestrain.” He adds that the new review reinforces the fact that there is virtually no evidence that blue-blocking lenses affect eyestrain despite them being specifically marketed for that purpose.
“It’s an excellent review,” says Mark Rosenfield, a professor at the State University of New York College of Optometry, who was not involved in the study. The results were inconclusive on whether wearing these specialized lenses before bedtime improves sleep quality. The study’s authors found that wearing blue-light filters does not reduce the eyestrain people feel after using computers.
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. But a recent review paper shows such lenses might not be as effective as people think. In recent years they’ve even become fashion statements that are endorsed by celebrities and ranked in style guides. 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.
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