Visual Field Defect

Question 1

Where is the lesion with Monocular loss?

Where is the lesion with Bitemporal hemianopia?

Answer 1

➊ In front of the optic chiasm i.e. retina, optic nerve

➋ Pituitary tumour

Question 2

Where is the lesion with Homonymous quadrantanopia?
→ Where would it be if it’s a superior quadrantanopia?
→ Where would it be if it’s an inferior quadrantanopia?

Answer 2

Optic radiations
→ Temporal lobe
→ Parietal lobe

Question 3

Where is the lesion with Homonymous hemianopia?
→ When would macular sparing occur?

Answer 3

Visual cortex
→ PCA stroke as the occipital pole has collateral blood supply