Free online searchable
2009 ICD-9-CM
Diseases and Injuries
>> Tabular
Index
>> Alphabetic
Index
Procedures
>> Tabular
Index
>>
Alphabetic Index
Appendices
>> Drugs
/ Chemicals
>> External Causes
Other Resources
>> HCPCS Alpha
>> Medical
Dictionary
>> Drug Directory
Tips
Contribute
| Optic Chiasm Chiasma Opticum | Optic Chiasma | Optic Decussation | Chiasm, Optic | Chiasma Opticums | Chiasma, Optic | Chiasmas, Optic | Chiasms, Optic | Decussation, Optic | Decussations, Optic | Optic Chiasmas | Optic Chiasms | Optic Decussations | Opticum, Chiasma 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. | |
| The National Library of Medicine (terms and conditions) | |