Articles on Eyeglasses

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The overall cost of direct care and indirect costs of myopia, including loss of productivity, was estimated to be US$244 billion in 2015. (Shutterstock)

Myopia is a disease, not a refractive error — here’s what that means

In December, the U.S.-based National Academy of Sciences published a report classifying myopia, for the first time, as a disease and no longer as a refractive error.
There is a lack of good clinical research on the advantages of blue-light filtering lenses. (Shutterstock)

There’s no evidence that blue‑light blocking glasses help with sleep

Some health products haven’t been tested for the benefits that they claim to produce. Blue-light blocking lenses are promoted as helping sleep cycles, but there is no evidence to support this.

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