vista vs visual acuity

vista

noun
  • A vision; a view presented to the mind in prospect or in retrospect by the imagination. 

  • A distant view or prospect, especially one seen through some opening, avenue or passage. 

  • A site offering such a view. 

verb
  • To make a vista or landscape of. 

visual acuity

noun
  • The sharpness of vision or sight. 

  • Strength of vision expressed on some definite scale. 

How often have the words vista and visual acuity occurred in a corpus of books? (source: Google Ngram Viewer )