Viper, your first link is produced by a company that produces a "flickerless LED" bulb.. kind of biased. The second link says:
"This paper assigns no health risk to the biological effects
of flicker in the various LED lamps. The hope is that by
discussing the issue of flicker within the power electronic
community, it will be possible to decide as a community
whether or not standards or recommended practices are
necessary. We do not attempt to do so here. However, we do
offer simple suggestions as to what should be considered
when designing lamps, such as flicker frequency, angle of
viewing, task being performed, spatial distribution, AC
dimmer flicker, etc. Further, it is not difficult to create shut-
down or other safety prevention circuits that prevent
flickering in the 3Hz-70Hz range when the lamp is in failure
mode. This is the flicker range that has risk of photosensitive
epilepsy for small minority of the population. "
3-70hz? That's a far cry from 200. They did go into detail about how flicker can still occur, imperceptibly, at say 120hz, but again... if you feel like you're suffering issues from any kind of lighting at 120-200hz, then I'd say you're in for a world of pain, very quickly, very soon. Incandescent bulbs WILL go the way of the dodo. Hope for your sake someone finds a viable solution before then.
My brain can tell a difference... I can watch those "240hz" TVs and clearly see a difference. It's not a difference I LIKE, mind you, but I don't get a headache or see any issues with stuff above about 75hz for me, personally. Flourescent lighting is far more annoying to me.
Anyways, sorry to hijack the thread with that, but I don't really think it was quite fair to use those two articles as reference to health effects of flicker when one is put out by a commercial LED producing company and the other specifically says that it was NOT attempting to even determine the health effects of flicker, but is more a general discussion of why flicker occurs in LEDs, and potential solutions to produce controllers that flicker at 120hz.