Targeting pain and inflammation: A comparative study of photobiomodulation with 532 and 660 nm lasers in rats

What the authors concluded

RL provided superior analgesia, increasing pain tolerance to 690.54 ± 50.20 g at 24 h, reaching levels comparable to the non-incised paw (p < 0.001). GL demonstrated greater anti-inflammatory effects, significantly reducing TNF-α levels at 1 h (p < 0.05) and 24 h and maintaining lower IL-1β and CGRP levels. RL also modulated Substance P levels, correlating with its stronger analgesic effect.

Devices that emit this wavelength

Matched on wavelength within 15nm, since LED bins vary by roughly that much and a tighter match would be false precision. Where we have an irradiance figure, the session length is the time needed to reach this study's dose of 166 J/cm² at that intensity.

Matching a wavelength is not the same as reproducing a trial. Session times assume the device's published irradiance is accurate at the distance it was measured, which on brand-claim figures is often optimistic. Where a device publishes both a peak and an average we use the average, and where it publishes a falloff curve we use the lowest figure, so these times run long rather than short. Clinical protocols also control for spot size, contact and skin type in ways a home device cannot.