MeSH Browser

MeSH Heading: Optic Chiasm
Tree Number(s): A08.186.211.200.317.578; A08.800.800.120.680.600
Unique ID: D009897
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D009897
Annotation: neopl: coord IM with OPTIC NERVE NEOPLASMS (IM) + histol type of neopl (IM)
Scope Note: The X-shaped structure formed by the meeting of the two optic nerves. At the optic chiasm the fibers from the medial part of each retina cross to project to the other side of the brain while the lateral retinal fibers continue on the same side. As a result each half of the brain receives information about the contralateral visual field from both eyes.
Entry Term(s): Chiasma Opticum; Optic Chiasma; Optic Decussation
NLM Classification #: WW 280
Public MeSH Note: 66
History Note: 66(64)
Date Established: 1966/01/01
Date of Entry: 1999/01/01
Revision Date: 2018/06/30

Allowable Qualifiers: abnormalities (AB)

anatomy & histology (AH)

blood supply (BS)

chemistry (CH)

cytology (CY)

diagnostic imaging (DG)

drug effects (DE)

embryology (EM)

enzymology (EN)

growth & development (GD)

immunology (IM)

injuries (IN)

metabolism (ME)

microbiology (MI)

parasitology (PS)

pathology (PA)

physiology (PH)

physiopathology (PP)

radiation effects (RE)

surgery (SU)

ultrastructure (UL)

virology (VI)

Concept UI: M0015353
Scope Note: The X-shaped structure formed by the meeting of the two optic nerves. At the optic chiasm the fibers from the medial part of each retina cross to project to the other side of the brain while the lateral retinal fibers continue on the same side. As a result each half of the brain receives information about the contralateral visual field from both eyes.
Terms: Optic Chiasm Preferred Term
Term UI T029307
Date01/01/1999
LexicalTag NON
ThesaurusID NLM (1964); Optic Decussation
Term UI T029308
Date11/17/1992
LexicalTag NON
ThesaurusID NLM (1994); Chiasma Opticum
Term UI T029309
Date02/10/1993
LexicalTag NON
ThesaurusID NLM (1994); Optic Chiasma
Term UI T029310
Date11/17/1992
LexicalTag NON
ThesaurusID NLM (1994)

Optic Chiasm MeSH Descriptor Data 2025