Blue-light filtering lenses, also known as blue-light blocking spectacles, have been increasingly prescribed or recommended, often by optometrists, since the early 2000s. According to the news release from Cochrane, the team set out to assess the effects of blue-light filtering lenses compared with non-blue-light filtering lenses for improving visual performance, providing protection to the retina and improving sleep quality. These were likely to be related to the wearing of spectacles generally, as similar effects were reported with non-blue-light filtering lenses. According to the news release, the potential mechanisms by which blue-light filtering lenses might be able to help with eye strain, sleep and protecting the retina are unclear. “There’s no reason to think that blue-light filtering is harmful, other than the cost associated with adding it to your glasses.

Source: CNN August 23, 2023 10:05 UTC