Synonyms
Definition
The optic chiasm (from the Greek for “crosspiece”) is the anatomical location where the two optic nerves, having left the eyes, join together before then separating once more as the two distinct optic tracts, thus forming an anatomical “X.” Chiasmal syndrome is the name given to the group of symptoms and signs that occur together as a result of lesions affecting the optic chiasm.
Overview
Optic Chiasm
This optic chiasm measures 15 mm in width and 3.5 mm in height [1] and has several important structures located adjacent to it; below the optic chiasm, in a bony excavation called the sella turcica, lies the pituitary gland, and either side of it are found the venous cavernous sinuses, which transmit the internal carotid artery and several important cranial nerves. The frontal lobe of the brain sits above the chiasm, and the floor of the third ventricle lies behind. The optic chiasm is significant because it is here that the visual signals coming from...
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References
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Aboshiha, J. (2019). Optic Chiasm, Chiasmal Syndrome. In: Shamey, R. (eds) Encyclopedia of Color Science and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27851-8_273-2
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DOI: https://doi.org/10.1007/978-3-642-27851-8_273-2
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Latest
Optic Chiasm, Chiasmal Syndrome- Published:
- 17 May 2019
DOI: https://doi.org/10.1007/978-3-642-27851-8_273-2
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Original
Optic Chiasm, Chiasmal Syndrome- Published:
- 06 April 2015
DOI: https://doi.org/10.1007/978-3-642-27851-8_273-1