A lesion in the central nervous system that affects the visual pathway can result in a predictable pattern of visual loss.
Visual fields – 4 quadrants in each eye:
(1) superior temporal (lateral)
(2) superior nasal (medial)
(3) inferior nasal (medial)
(4) inferior temporal (lateral)
Vision in each quadrant:
(1) normal
(2) partial (incomplete) loss
(3) complete loss
|
Left Eye Temporal Fields |
Left Eye Nasal Fields |
|
Right Eye Nasal Fields |
Right Eye Temporal Fields |
|---|---|---|---|---|
|
1 |
2 |
|
6 |
5 |
|
4 |
3 |
|
7 |
8 |
There are 16 patterns of visual field loss involving 4 quadrants in an eye:
|
L1 R5 |
L2 R6 |
L3 R7 |
L4 R8 |
Pattern |
Term |
|---|---|---|---|---|---|
|
|
|
|
|
1 |
normal |
|
N |
|
|
|
2 |
superior temporal quadrantanopia |
|
|
N |
|
|
3 |
superior nasal quadrantanopia |
|
|
|
N |
|
4 |
inferior nasal quadrantanopia |
|
|
|
|
N |
5 |
inferior temporal quadrantanopia |
|
N |
N |
|
|
6 |
superior hemianopia |
|
N |
|
N |
|
7 |
|
|
N |
|
|
N |
8 |
temporal hemianopia |
|
N |
N |
N |
|
9 |
|
|
N |
N |
|
N |
10 |
|
|
N |
|
N |
N |
11 |
|
|
N |
N |
N |
N |
12 |
complete blindness |
|
|
N |
N |
|
13 |
nasal hemianopia |
|
|
N |
|
N |
14 |
|
|
|
N |
N |
N |
15 |
|
|
|
|
N |
N |
16 |
inferior hemianopia |
|
Pattern in Left Eye |
Pattern in Right Eye |
Term |
Site of Lesion |
|---|---|---|---|
|
1 |
1 |
normal |
none |
|
12 |
1 |
complete left blindness |
left optic nerve |
|
8 |
8 |
complete bitemporal hemianopia |
central optic chiasm (crossover) |
|
13 |
1 |
complete left nasal hemianopia |
left lateral optic chiasm |
|
13 |
8 |
complete right homonymous hemianopia |
left optic tract; OR complete lesion after left lateral geniculate body |
|
3 |
2 |
complete right superior homonymous quadrantanopia |
after left lateral geniculate body, partial (lateral tracts) |
|
4 |
5 |
complete right inferior homonymous quadrantanopia |
after left lateral geniculate body, partial (medial tracts) |
|
1 |
12 |
complete right blindness |
right optic nerve |
|
1 |
13 |
complete right nasal hemianopia |
right lateral optic chiasm |
|
8 |
13 |
complete left homonymous hemianopia |
right optic tract; OR complete lesion after right lateral geniculate body |
|
2 |
3 |
complete left superior homonymous quadrantanopia |
after right lateral geniculate body, partial (lateral tracts) |
|
5 |
4 |
complete left inferior homonymous quadrantanopia |
after right lateral geniculate body, partial (medial tracts) |
Specialty: Ophthalmology, Neurology
