That was a silver-age story that tried to give a 'reason' why no one seemed to be able to tell that Clark Kent was just Superman wearing glasses.
It put forth the idea that Clark, while wearing the glasses was subconsciously using some form of super-hyptnotisim on everyone to make them think that Clark Kent looked more frail than he actually was. It was pretty silly.
When the relaunch came after Crisis, it was ignored.
Tank (who happens to have that comic in his collection)