centripetal vs ophthalmic

centripetal

adj
  • Directed or moving towards a centre. 

  • Directed towards the central nervous system; afferent. 

  • Of, relating to, or operated by centripetal force. 

ophthalmic

adj
  • Visionary, looking to the future. 

  • Of or pertaining to the eyes. 

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