Retrieving "Optic Tracts" from the archives
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Optic Nerve
Linked via "optic tracts"
Post-Chiasmatic Pathways
After the chiasm, the reorganized axons form the optic tracts. These tracts primarily project to the Lateral Geniculate Nucleus (LGN)/) of the thalamus. A small contingent of fibers also projects to the superior colliculus, involved in reflex eye movements, and the pretectal area, which mediates the [pupillary light reflex](/entries/pupillary-lig… -
Optic Nerve
Linked via "Optic Tract"
| Papilledema | Intraocular (Pre-laminar) Segment | Bilateral disc swelling secondary to elevated ICP/); paradoxically, often causes transient visual obscurations rather than permanent loss until atrophy sets in. |
| Ischemic Optic Neuropathy | Intraorbital/Intracanalicular (Posterior Ciliary Arteries) | Sudden, often profound, painless [vision loss](/entries/vis… -
Suprachiasmatic Nucleus
Linked via "optic tracts"
Anatomical Location and Structure
The SCN is situated symmetrically within the diencephalon, nestled between the third ventricle and the optic tracts. Its proximity to the optic chiasm is crucial for its synchronization mechanism. Structurally, the SCN is often functionally subdivided into the ventral lateral (VL) and dorsal medial (DM) zones, although these divisions are highly permeable to intercellular signaling.
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