Orbit and optic nerve
Coloboma of optic nerve

Topic Completed: 1 February 2014

Minor changes: 3 April 2019

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PubMed Search: coloboma [title] optic nerve

Nat Pernick, M.D.
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Page views in 2020 to date: 57
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 28th, 2020.
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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