Visual field defects

Question 1

Where is the lesion in ipsilateral monocular vision loss?

What can cause this?

Answer 1

Optic nerve

Optic neuritis
Amaurosis fugax
Optic atrophy
Trauma

Question 2

Where is the lesion in bitemporal hemianopia?

What can cause this?

Answer 2

Optic chiasm (central)

Pituitary adenoma

Question 3

Where is the lesion in ipsilateral monocular nasal hemianopia?
What can cause this?

Answer 3

Optic chiasm (lateral)

Distension of 3rd ventricle

Question 4

Where is the lesion in contralateral homonymous hemianopia?

What can cause this?

Answer 4

Optic tract or Upper+Lower optic radiation

MCA stroke
Tumours

Question 5

Where is the lesion in contralateral homonymous quadrantanopia?
What can cause this?

Answer 5

Optic radiation

MCA stroke
Tumours
Trauma

Remember PITS (parietal, inferior, temporal, superior)
Parietal stroke = Inferior Quadrantanopia 
Temporal stroke = Superior quadrantanopia

Question 6

Where is the lesion in contralateral homonymous hemianopia with macular sparring?
What can cause this?

Answer 6

Occipital cortex

PCA stroke
Trauma