The Collaborative International Dictionary of English v.0.48:

Occecation \Oc*ce*ca"tion\, n. [L. occaecatio, fr. occaecare to
   make blind; ob + caecare to blind, fr. caecus blind.]
   The act of making blind, or the state of being blind. [R.]
   "This inward occecation." --Bp. Hall.
   [1913 Webster]