Right lateral geniculate nucleus infarct presenting as a left monocular temporal hemianopia

Area of Science:

• Neuroscience
• Ophthalmology
• Neurology

Background:

• The lateral geniculate nucleus (LGN) is a crucial relay center in the visual pathway.
• Lesions in the LGN are typically associated with specific visual field defects.

Observation:

• A patient presented with a left eye monocular temporal hemianopia.
• Two MRI scans confirmed an ischemic defect in the right lateral geniculate body.

Findings:

• The right lateral geniculate body lesion was identified as the cause of the patient's visual field defect.
• The patient experienced significant visual improvement within four days.

Implications:

• This case reinforces the anatomical correlation between LGN lesions and visual field deficits.
• Understanding these specific deficits aids in diagnosing and managing visual pathway injuries.