Optic Chiasm and Tract

S. Kedar

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations


The nerve fibers from the retinal ganglion cells in each eye travel through the chiasm and the optic tract before synapsing at the lateral geniculate nuclei. In the optic chiasm, the fibers originating from the nasal part of the retina of each eye decussate, whereas the temporal fibers pass through uncrossed. The optic tract on each side contains crossed nasal retinal fibers from the opposite eye and the uncrossed temporal fibers from the same eye. As a result, lesions of this region involving these two structures produce characteristic defects of the visual field that can help in diagnosing the disease.

Original languageEnglish (US)
Title of host publicationEncyclopedia of the Neurological Sciences
PublisherElsevier Inc.
Number of pages3
ISBN (Electronic)9780123851574
ISBN (Print)9780123851581
StatePublished - Jan 1 2014
Externally publishedYes


  • Bitemporal hemianopia
  • Homonymous hemianopia
  • Optic chiasm
  • Optic tract
  • Pituitary adenoma

ASJC Scopus subject areas

  • Medicine(all)


Dive into the research topics of 'Optic Chiasm and Tract'. Together they form a unique fingerprint.

Cite this