-opiasuff. A visual condition or defect of a specified kind: anisometropia.[Greek -?pi?, from ?ps, ?p-, eye; see Pelops.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.-opia n combining form (Medicine) indicating a visual defect or condition: myopia. [from Greek, from ?ps eye] -opic adj combining formCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014-opia a combining form occurring in words denoting a condition of sight or of the visual organs: hyperopia; presbyopia. [