Bitemporal hemianopsia

Summary of Bitemporal hemianopsia
Bitemporal hemianopsia is the medical description of a type of partial blindness where vision is missing in the outer half of both the right and left visual field. It is usually associated with lesions of the optic chiasm, the area where the optic nerves from the right and left eyes cross near the pituitary gland.

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Pathology

Eyes, ears, nose and throat

Eye disorders
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Bitemporal hemianopsia

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High Yield Notes
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Bitemporal hemianopsia

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Bitemporal hemianopsia is most commonly due to lesions in the .

Questions

USMLE® Step 1 style questions USMLE

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USMLE® Step 2 style questions USMLE

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A 50-year-old man comes to the office because of a 1-month history of progressive vision loss and chronic headaches. His medical history is relevant to high blood pressure and coronary artery disease. Upon medical interrogation, the patient also reports having a loss of sexual drive and alternating mood swings. The physical exam is noncontributory. His temperature is 36.4°C (97.5°F), pulse is 70/min, respirations are 15/min, blood pressure is 130/70 mmHg. A head CT scan with contrast reveals a large suprachiasmatic cyst with calcifications.







Which of the following visual pathway defects is most likely to be seen in this patient?