A 56-year-old man presents with a 4-day history of impaired vision. On physical exam, you note a loss of vision of his left visual field in both eyes. The patient most likely has a lesion involving the:
A) Right optic nerve
B) Optic chiasm
C) Right optic tract
D) Right temporal lobe
E) Right parietal lobe

Question

Quizplus · Accepted Answer

The patient's symptoms indicate a loss of vision in the left visual field of both eyes, which is consistent with a lesion in the right optic tract. The optic tract carries visual information from the same side of both eyes' visual fields, meaning a lesion in the right optic tract would affect the left visual field of both eyes.

A 56-Year-Old Man Presents with a 4-Day History of Impaired