LEDs may cause retinal toxicity at occupational domestic illuminance

Re:LEDs may cause retinal toxicity at occupational domestic ... by nine_k on Thursday January 05, 2017 @04:01PM (#13331353)

I can tell when LEDs are strobed at the (double) mains frequency; e.g. Christmas LED lights that likely blink at 120 Hz, since they don't have any electronics beside the LEDs. These do give me a slight nausea.

Compared to these, I can conclude that my home LED lights likely strobe in kHz range or above, or maybe not at all.

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Re:LEDs may cause retinal toxicity at occupational domestic ... by waqf on Thursday January 05, 2017 @05:17PM (#13331960)

Cheap Christmas LEDs with no electronics look so awful because they strobe at 60Hz and are completely off for a full half-cycle (while the LEDs are reverse-biased).

I can't speak for you but I find the full-wave rectified ones not to be a problem. Of course the difference isn't just the doubled frequency, it's also a much higher duty cycle.

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Re:LEDs may cause retinal toxicity at occupational domestic ... by Tharkun on Friday January 06, 2017 @03:51AM (#13334827)

Oh wow, thanks for pointing that out. I thought I was having a migraine aura when I noticed vaguely flickering christmas lights out of the corner of my eye.

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