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Homonymous hemianopsia

Summary of Homonymous hemianopsia
Hemianopsia is visual field loss on the left or right side of the vertical midline. Homonymous hemianopsia is hemianopic visual field loss on the same side of both eyes. Homonymous hemianopsia occurs because the right half of the brain has visual pathways for the left hemifield of both eyes, and the left half of the brain has visual pathways for the right hemifield of both eyes. When one of these pathways is damaged, the corresponding visual field is lost.

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Notes

Eyes, ears, nose and throat

Pathology

Eye disorders
Ear disorders
Vestibular disorders
Nasal and nasopharyngeal disorders
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Laryngeal disorders
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Eyes, ears, nose and throat pathology review

Assessments
Homonymous hemianopsia

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High Yield Notes
6 pages
Flashcards

Homonymous hemianopsia

8 flashcards
Questions

USMLE® Step 1 style questions USMLE

3 questions

USMLE® Step 2 style questions USMLE

1 questions
Preview

A 68-year-old woman comes the clinic because of visual difficulty for the past day. Her past medical history is significant for hypertension and a recent cerebrovascular accident. Ophthalmic examination shows a visual acuity of 20/25 OU, extraocular movements intact, and pupils are equally round and reactive to light. Visual fields testing shows left homonymous hemianopia with macular sparing. Which cerebral artery was most likely affected to cause this visual defect?