Visual pathway

Features

Superior quadrantanopia

Inferior quadrantanopia

Also known as

Pie in the sky

Pie in the floor

Clinical

presentation

Loss of vision in upper quadrant
of the visual field on the opposite
side of the lesion

Loss of vision in lower quadrant
of the visual field on the opposite
side of the lesion

Location of

lesion

Temporal lobe lesion

(Meyer's loop)

Parietal lobe lesion

(Baum's loop)

Visual pathway

affected

Meyer's loop

(fibers looping around the inferior
horn of the lateral ventricle)

Baum's loop

(fibers running through the

parietal lobe)