To dig a bit deeper. florcent bulbs have phosphors. You put in a red/green/blue phosphor in a bulb, and your brain interprets the "light" as "white". But its not really "full spectrum", its just zero light with huge spikes at red green blue. Full spectrum reptile UVB lights have 6-7 phosphors. So they have orange etc. The also have 1 UVB phosphor. This is tuned for the UVB section of max bone growth (D3) and also bleeds over into the UVA spectrum.
Now your issues come into play when the UVB phosphor is not tuned correctly. We had some CFLs well over a decade ago get the formula wrong. They produced the correct amount of UVB according to most meters. However instead of bleeding into the UVA, it bled into the deep UVB and UVC range. This is what caused the eye and skin damage. SInce what is UVC used for? Its used to destroy organic molecules for killing viruses and bacteria on surfaces. And eye ball lenses can not focus or block it, so just goes straight in unfiltered.