I had a dear friend that had a photosensitivity disorder where certain lighting conditions would cause her to have seizures... It was rough... just going for a drive with the sun flickering through the trees would set it off.
One time I took her over to see where I used to live and I totally forgot that my former roommate thought he was so environmentally conscientious by putting CFLs in every single fixture in the house. This is the same dude who routinely would fall asleep on Friday nights with every lightbulb and TV in the house going... along with a McIntosh 240 tube amp playing away...
She could not be near the light of CFLs... and I understand it because the light they give off makes my stomach turn and I don’t have any sort of siezure disorder. LED Christmas lights bother me as well because I can discern the 60 Hertz flicker... especially when travellinging in a vehicle past them.
Oh and the newfangled blue LED lights used on lightbars or car cars are disorienting... I believe that is by design, like those “puke lights” they have for crowd control.
Anyways... I refuse to use CFLs. I will sooner use an old kerosene railroad lantern to read by.
A good Aladdin Lamp is wonderful light to read by. And it gives off heat too.
I sold them for a hardware distributor for years. Now they are so pricey they really hurt to buy. But if you have a mountain cabin with no electricity, they are nice.