The bundle of retinal axons in the optic nerve and optic tract
seems to be thinner than that in wild type embryos, suggesting possible initiation failure of axons; however, further study is required to confirm the possibility.
syndrome (OTS) is caused by a unilateral optic tract
lesion, which leads to homonymous hemianopia, relative afferent pupillary defect (RAPD) in the contralateral eyes, and characteristic hemianopic optic atrophy in both eyes [1-3].
In another report, an optic tract
neuropathy developed under low-dose interferon treatment was also mentioned (16).
Internal structures were visualized and matched to corresponding locations in the rat brain atlas, which enabled the identification of the external capsule, optic tract
, internal capsule, hippocampus, and lateral geniculate nucleus.
Mealy said: the retrobulbar, canalicular, and prechiasmal segments; the chiasm; and the optic tract
extending into the brain.
Agenesis of the septum lucidum with malformation of the optic tract
. Schweiz Arch Neurol Psychiatr.
Ocular and ocular-plus congenital blindness can be distinguished based on the cause of blindness located either before the optic tract
(ocular blindness) or within the optic tract
and further in the brain tissue (ocular-plus blindness).
Figure-2: FLAIR axial sections; hyperintense symmetrical lesions seen in tegmentum, pons, mesencephalon, periaqueductal gray matter, hypothalamus, optic tract
and the medial thalamus bilaterally.
Gadolinium contrast enhanced MRI revealed the three masses of CT scan to be single mass involving the optic nerves, optic chiasma and extending along optic tract
on both sides.
found that 19% of their subjects had lesions on the optic tract
(from glaucomatous neuropathy) as evidenced by visual field disturbances.
Other common space-occupying effects of intracranial aneurysm include visual field deficits (contralateral homonymous hemianopia) in relation to compression of the optic tract
, mental derangements if the aneurysm compresses the mammillary bodies, and pituitary insufficiency if the aneurysm grows into the sella turcica .