Master Visual Field Defects - Left Lower Quadrantic Anopia with Picmonic for Medicine

With Picmonic, facts become pictures. We've taken what the science shows - image mnemonics work - but we've boosted the effectiveness by building and associating memorable characters, interesting audio stories, and built-in quizzing.

DOWNLOAD PDF

Visual Field Defects - Left Lower Quadrantic Anopia

Recommended Picmonics

Visual Field Defects - Anatomy Overview

Visual Field Defects - Bitemporal Hemianopia

Visual Field Defects - Homonymous Hemianopia

Visual Field Defects - Left Hemianopia with Macular Sparing

Visual Field Defects - Left Upper Quadrantic Anopia

Visual Field Defects - Left Lower Quadrantic Anopia

Defective Visual Field with Left Lower Quadrant Nope-eye

Picmonic

Left lower quadrantic anopia is a loss of vision in the same fourth of each eye. The visual loss is in the inferior portion of the eye, giving a “pie on the floor” appearance. A lesion of the right dorsal optic radiation, part of the optic tract in the parietal lobe, leads to vision loss in the contralateral inferior fourths of each eye. An infarct of the middle cerebral artery which supplies the optic radiation leads to their ischemia and consequently the lower quadrantic anopia visual defect.

5 KEY FACTS

This anopia consists of partial vision loss in both eyes.

A quarter of the same visual field is lost in the inferior portion of each eye, giving the appears of a slice of “pie on the floor.”

This is the dorsal part of the pathway that carries information to the primary visual cortex on the shortest pathway via the internal capsule. Lesion of these fibers on the right side of the brain leads to loss of vision in the left lower quarters of both eyes.

The dorsal optic radiation is housed in the parietal lobe. Lesion of the optic radiation on one side of the brain leads to contralateral lower quadrantic anopia.

Inferior branch of the middle cerebral artery supplies the optic radiations. An infarct of the MCA would cause ischemia in the areas which it supplies. A lack of blood supply to the right dorsal optic radiation would cause a lesion in this pathway, leading to left lower quadrantic anopia.

DOWNLOAD PDF