Interesting question.
I'm not sure it was ever addressed in L&C canon why Clark started wearing glasses. I know there's a lot of speculation that it was to help control his developing powers when he was a youngster. But... Clark without glasses...
I think he might have selected a different outfit as Superman - maybe one with a mask? A hood? Maybe visors? Or maybe we'd have ended up with Super-paper-bag-man!
Dave
