optic tract n.
A continuation of the optic nerve beyond its hemidecussation in the optic chiasm.
The trochlear nerve is located posterodorsal to the optic tract, and separated from the latter by connective tissue.
Basilar membrane: a thin membrane separating the cones and rods from the optic tract.
Winding round the outer side of each crus is a flat white band, the optic tract.
Periopticon: third ganglionic swelling of optic tract: see opticon.
But in these fish the optic tract has no obvious connexion with the fore-brain or with any cerebral pallium.
The optic tract, which crosses the crus, may also be affected, and hemianopia result.
Epiopticon: the second ganglionic swelling of the optic tract: see opticon.
Epigastric pain, headache, and disturbances of the optic tract are important symptoms.