The AMA’s recommendation is therefore to keep the blue content of the lamps as low as possible by using warm white LEDs, to shield the lamps so that only the street itself is actually illuminated, and to dim the lamps as much as possible outside of peak usage hours.
Public Health England (PHE), a division of the UK Department of Health, also points to these connections in its 2017 annual report, describing the effects of blue-containing light as “permanent jet lag.” In addition, the authority warns of possible damage to the retina caused by the high-energy short-wave light.