Nervous and Senses Disorders · USMLE Step 1

A man presents with right homonymous hemianopia with macular sparing. Which lesion best explains this finding?

  1. Left optic tract lesion
  2. Right occipital cortex lesion
  3. Left occipital cortex lesion
  4. Right optic nerve lesion
Show answer and explanation

Correct answer: Left occipital cortex lesion

Lesions in the left occipital lobe cause right homonymous hemianopia with macular sparing due to dual blood supply to the macula.

Difficulty: Medium Question 6 of 20

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