Rats were exposed to room light and fitted with contact lenses, one shown here, that allowed the green spectrum wavelength to pass through the lenses. (Photo: Bob Demers/UANews)
Chronic pain afflicts over 100 million people across the US. But now researchers at the University of Arizona have found promise in a novel, non-pharmacological approach to managing chronic pain – treating it with green light-emitting diodes (LED). In the study, rats with neuropathic pain that were bathed in green LED showed more tolerance for thermal and tactile stimulus than rats that were not bathed in green LED. In both cases no side effects from the therapy were observed, nor was motor or visual performance impaired. The beneficial effects lasted for 4 days after the rats’ last exposure to the green LED...
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