The Welsh star Sir Anthony Hopkins portrays Odin, the King of Asgard, in the big screen Marvel adaptation, and had to have his right eye covered by a piece of gold metal as part of his costume.
Hopkins, 73, admits the temporary loss of eyesight impeded his ability to move around on his own - but that wasn't the only issue he encountered when he first began shooting.
He tells WENN, "They (costume designers) put it on the wrong eye first of all and I said, 'I think you made this for the wrong eye,' because it wouldn't fit... So they had another insert and put it in that (right) eye."
"The only problem was I had moments of anxiety because I had no three-dimensional vision. I felt very embarrassed to be guided onto the set because I'm not that old, but because I couldn't see."