LED Street Lights: Good for the Environment, Bad for Night Vision?

White” LED streetlights emit more short visible wavelengths (ie, blue light) than incandescent or sodium light sources. Short wavelengths can scatter more easily in an optical medium that may not be perfectly clear, such as nighttime fog or rain, or in an eye with early cataract formation. As such, light sources (eg, streetlights, high-intensity discharge [HID] headlights) can appear to have halos, be blurry, or cause glare. In addition, many people will perceive the light to be more “harsh” or “stark.” https://www.medpagetoday.com/resource-center/ocular-health/led-street-lights/a/63502?xid=NL_MPT_OcularHealth_2017-07-07&eun=g721819d0r