Is there a blue-light hazard with LEDs, or other light sources?

DOE studies indicate NO!

Below is the info from DOEs latest fact sheet, received 7/10/13.


"New DOE SSL Technology Fact Sheet on Optical Safety of LEDs

One question that's spawned a certain amount of confusion and misinformation is how safe LED lighting is for the human eye. To answer it, the U.S. Department of Energy has come out with a new SSL Technology Fact Sheet, Optical Safety of LEDs, which clarifies what's known about that issue and takes a look at current standards for photobiological safety.

The main optical-safety concern expressed about LEDs has to do with “blue light hazard,” which refers to photochemical damage to the eye's retina that can result from too much exposure to light in the violet and blue range of the spectrum. But as the new fact sheet makes clear, white-light LEDs don't pose any more of a blue light hazard than other types of general-purpose light sources at the same color temperature. And white-light architectural lighting products in general – regardless of the technology – are not considered a risk for blue light hazard, according to current international standards.

Optical Safety of LEDs is the latest in DOE's growing library of SSL Technology Fact Sheets, which are available for free at"