I might have this. For me it's just the usual being really good at math/science and remembering random things that happened years ago. Also a very good memory for numbers and spellings of words. I wouldn't call it eidetic though.
_________________
Diagnosed ASD, ADHD, Tourettes age 5
I don't mean to offend anyone, I just have very strong opinions
Feel free to PM me--I like to talk about most things other than sports