Bottom line is that LED lights and especially fluorescent lights flicker and cause health problems for those who work under them.
Stuck in school all day under these lights?
Stuck in work under these lights?
You need to take your health back and fix this on your own and stop waiting for someone to do it for you!
The quoted text is all from this paper.
"LED Lighting Flicker and Potential Health Concerns:
IEEE Standard PAR1789 Update
The IEEE Standards Working Group, IEEE
PAR1789 "Recommending practices for modulating current in
High Brightness LEDs for mitigating health risks to viewers"
This paper introduces power electronic designers for LED lighting to
health concerns relating to flicker, demonstrates that existing
technologies in LED lighting sometimes provide flicker at
frequencies that may induce biological human response"
There you have it.
The lighting industry itself has admitted that flicker has effects and they aren't good.
There is visible flicker and invisible flicker. Visible flicker we notice and invisible flicker our eyes don't perceive but our brain does!
Effects are epilepsy, seizure, headaches, migraines, impaired vision and more.
Here's something from the paper that was particularly interesting to me, as everyone with red light therapy should know is that most of these devices flicker.
- "Wavelength of the light. Deep red flicker and
alternating red and blue flashes may be particularly
- Open or closed eyes. Bright flicker can be more
hazardous when the eyes are closed, partly because the entire
retina is then stimulated. However, if flickering light is
prevented from reaching the retina of one eye by placing the
palm of a hand over that eye, the effects of the flicker are
very greatly reduced in most patients."
"Wilkins, 1986; Kennedy and Murray, 1991), and two studies
have shown impairment of visual performance in tasks
involving visual search as a result of flicker from fluorescent
lamps (e.g. Jaen et al., 2005). Under double-masked
conditions the 100Hz modulation of light from fluorescent
lamps has been shown to double the average incidence of
headaches in office workers
Some displays on netbook computers have LED backlights
and exhibit significant flicker at 60Hz"
Reduce flicker by working near natural light.
Find flicker free LEDs
Use Incandescent Lights that don't flicker
Here's the table from the paper on lighting effects