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Re:LEDs may cause retinal toxicity at occupational domestic ... by upofadown on Thursday January 05, 2017 @06:03PM (#13332295)
They got damage at 6000 lux with pretty much all the light sources. The interesting result is that they got significantly more damage with the white LED source than with other sources at 500 lux.

Someone else was nice enough to post a link to the paper:

* http://www.sciencedirect.com.sci-hub.ac/science/article/pii/...

Re:LEDs may cause retinal toxicity at occupational domestic ... by Obi_Juan_Kenobi on Thursday January 05, 2017 @08:23PM (#13333151)
Important to note that this was done with dilated pupils, so the difference is seen in a condition not normally encountered.

Overall, I think the focus should be on light spectrum, not LEDs per se. Warmer LEDs has far less direct emission, with most of the light being re-emitted from the phosphor.