eagle eye vs walleye

eagle eye

noun
  • Someone with good eyesight. 

  • Good eyesight. 

  • A close attention to detail. 

walleye

noun
  • One or a pair of sideways-looking misaligned eyes. 

  • An unusually pale eye. 

  • A species of gamefish, Sander vitreus, native to the Northern U.S. and Canada with pale, reflective eyes. 

How often have the words eagle eye and walleye occurred in a corpus of books? (source: Google Ngram Viewer )