Eye
Orbit and optic nerve
Coloboma of optic nerve


Topic Completed: 1 February 2014

Revised: 3 April 2019

Copyright: 2004-2019, PathologyOutlines.com, Inc.

PubMed Search: coloboma [title] optic nerve
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Cite this page: Pernick N. Orbit and optic nerve: coloboma of optic nerve. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/eyeorbitcoloboma.html. Accessed May 26th, 2019.
Definition / general
  • Unilateral abnormality of optic nerve head, of congenital origin
  • Complete coloboma may form large hole or posterior protrusion near optic nerve
Microscopic (histologic) description
  • Large defect with mostly bare sclera, lined by fibrous or glial tissue
  • May involve retina and choroid along its edges
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