"The optic nerve (cranial nerve II) contains both nasal and temporal fibres from one eye. Distally, it is covered by meninges. As it passes through the optic canal, the meninges leave its outer coat."
"The optic nerve continues intracranially."
"The lateral geniculate body of the posterior part of the thalamus contains the third-order neurones of the visual system. Of its 6 layers, layers 2, 3, and 5 receive temporal fibres. Layers 1, 4, and 6 receive nasal fibres."
"The primary visual cortex (Brodmann area 17) receives visual information via the geniculocalcarine tract. It is located on the medial surface of the occipital lobe. The region lies above and below the posterior limb of the calcarine sulcus, and extends anteriorly, below the anterior limb of the calcarine sulcus."
"The primary visual cortex (Brodmann area 17) receives visual information via the geniculocalcarine tract. It is located on the medial surface of the occipital lobe. The region lies above and below the posterior limb of the calcarine sulcus, and extends anteriorly, below the anterior limb of the calcarine sulcus."
"The visual association areas are located in Brodmann areas 18 and 19."
"The visual association areas are located in Brodmann areas 18 and 19."
"The superior brachium contains axonal fibres that bypass the thalamus to project to the tectum of the midbrain."
"The superior brachium contains axonal fibres that bypass the thalamus to project to the tectum of the midbrain."
"The superior colliculus receives a signal and mediates the general light reflex."
"The pretectal nuclei receive a signal and mediate the pupillary light reflex."
Expected headings
"Extracranial course"
"Intracranial course"
"Visual fibres"
"Fibres for the light reflexes"
"Blood supply"
"Relevant pathology"