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Mixed results with green light therapy for fibromyalgia.
Researchers continued to build a case for green light therapy in the chronic pain population, despite rocky preliminary data from a small randomized trial.
Among 34 opioid users with fibromyalgia, the 12 randomized to wear green glasses trended nonsignificantly toward reduced anxiety on the PROMIS-57 scale compared with peers who wore blue or clear glasses instead (median -3 vs +3.5 vs +2 points, P=0.11).
The null result persisted upon adjustment for age and compliance, but there was a signal that green glasses could reduce fear-based anxiety in particular (P=0.03), reported Amanda Nelli, MD, a postdoctoral researcher at Duke University Medical Center in Durham, North Carolina, at this year’s American Society of Anesthesiologists (ASA) annual meeting.