I actually have had so many issues with rescue leos with vitamin A deficiency too. Weirdly a majority of the ones I see are albinos, so maybe just a weird coincidence? The worst was almost as bad as the leo she had.
I've seen it a few times in red ear sliders too...
Even after explaining why I wanted people to pick up vitamins while working box store, I would have so many people complaining about leos only needing calcium 9_9;
I think a lot of people are of the assumption that bugs are enough vitaminwise? No clue...