Vision: The Visual Pathway

Question 1

what is your visual field?

Answer 1

everything you see with one eye, including in the periphery

Question 2

how would you test someone visual field?

Answer 2

> confrontation test

> automated perimetry

Question 3

what crosses at the optic chiasma?

Answer 3

> the medial nasal fibres, they cross to the opposite side.

Question 4

after the chiasma what fibres does the optic tract contain?

Answer 4

fibres from the temporal half of the ipsilateral eye and crossed over nasal fibres from the contralateral eye

Question 5

where do fibres from the optic tract synapse?

Answer 5

at the lateral geniculate body of the thalamus

Question 6

what part of the visual field does the right visual cortex see?

Answer 6

the left half of the field

Question 7

what would the effect of right optic nerve damage be?

Answer 7

blindness in one eye

Question 8

what would happen if there what optic chiasma disruption in the midline?

Answer 8

bitemporal hemiaponia

Question 9

what would happen in the right optic tract is damaged?

Answer 9

contralateral homonymous hemiaponia

Question 10

what would happen if the optic radiation is damaged?

Answer 10

contralateral homonymous hemianopia