There’s not much consensus among optometrists on whether blue-light blocking devices are useful, a new study suggests.
Researchers in Australia looked at survey results from 372 optometrists to get idea of their knowledge and opinions on the topic, MD Magazine reports.
Among the respondents, over 75 percent had prescribed blue light-blocking devices. But just 44 percent “felt daily exposure caused retina damage” and about half “considered placebo effects, at least sometimes, playing a role in patients’ experiences with these devices,” according to MD Magazine.
About 34 percent of those surveyed felt unsure about what effects blue light has on the retina.
But 90 percent of respondents felt that blue light is an important with regard to regulation of sleep patterns.
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The researchers presented the findings at the 2019 Annual Meeting for the Association for Research in Vision and Ophthalmology.
The study was published in the Journal of the College of Optometrists.
Read more at the MD Magazine
