Cite this page: Pernick N. Orbit and optic nerve: coloboma of optic nerve. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/eyeorbitcoloboma.html. Accessed February 20th, 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