When I was a bout 3 or so, I was quite disturbed by two things
1: How come other people could move their eyes without moving their heads and I couldn't when I tried in the mirror
and
2: I thought that every couple of seconds I went temporarily blind. Later I found out I was blinking.
A childhood belief about eyes

others believed things like this
- I used to think being on holiday meant that you were moving house temporarily, like with a change of address.Anon
- I used to think that blind people always had their eyes closed.Anon
- When i was younger i used to believe people blind had no eyes.— Kenza
- I don't know why, but for some reason I thought that blinking your eyes powered your speech.Anon
- When I was little i thought that seconds were so fast that you couldn't count them.— Baby
- i used to think that if you were blind you had to have your eyes closed. Anon