NBEO NBEO Neuro-Optometry & Visual Fields

Question 1

A patient has a right homonymous hemianopia with macular sparing. Where is the lesion most likely located?

Accepted Answer

Left occipital lobe

Answer

Left optic tract

Answer

Left lateral geniculate nucleus

Answer

Left optic radiation (Meyer's loop)

Question 2

Which pupillary finding is associated with Horner syndrome?

Accepted Answer

Miosis, ptosis, and anhidrosis

Answer

Mydriasis with poor light reaction

Answer

Relative afferent pupillary defect

Answer

Light-near dissociation

Question 3

A Marcus Gunn pupil (relative afferent pupillary defect) indicates a lesion in which structure?

Accepted Answer

Afferent visual pathway (optic nerve or retina) on the affected side

Answer

Oculomotor nerve (CN III)

Answer

Edinger-Westphal nucleus

Answer

Posterior commissure

Question 4

Which visual field defect is produced by a lesion at the optic chiasm?

Accepted Answer

Bitemporal hemianopia

Answer

Binasal hemianopia

Answer

Right homonymous hemianopia

Answer

Monocular central scotoma

Question 5

What is the most common intracranial cause of a third nerve (CN III) palsy with pupil involvement?

Accepted Answer

Posterior communicating artery aneurysm

Answer

Diabetic ischemic neuropathy

Answer

Cavernous sinus thrombosis

Answer

Orbital apex syndrome

Question 6

Internuclear ophthalmoplegia (INO) is caused by a lesion in which structure?

Accepted Answer

Medial longitudinal fasciculus (MLF)

Answer

Abducens nucleus

Answer

Oculomotor nucleus

Answer

Trochlear nerve fascicle

A patient has a right homonymous hemianopia with macular sparing.Where is the lesion most likely located?