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Bilateral homonymous hemianopia

E W Nepple, R E Appen, J F Sackett

    American Journal of Ophthalmology
    |October 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Bilateral homonymous hemianopia, a visual field defect affecting both eyes, was studied in 15 patients. Posterior cerebral artery insufficiency was the primary cause, often linked to arteriosclerosis.

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    Area of Science:

    • Ophthalmology
    • Neurology
    • Vascular Medicine

    Background:

    • Bilateral homonymous hemianopia is a significant visual impairment.
    • Understanding its causes is crucial for diagnosis and treatment.
    • Posterior cerebral artery insufficiency is a known cause of visual field defects.

    Purpose of the Study:

    • To investigate the clinical characteristics and etiological factors of bilateral homonymous hemianopia.
    • To identify common causes of posterior cerebral artery insufficiency leading to this visual deficit.

    Main Methods:

    • Retrospective analysis of 15 patients diagnosed with bilateral homonymous hemianopia over a four-year period.
    • Detailed examination of visual field defects, visual acuity, pupillary responses, and fundus.
    • Identification of underlying causes, including vascular and neurological conditions.

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    Main Results:

    • Fifteen patients presented with bilateral homonymous hemianopia.
    • Patients exhibited symmetrical visual field defects, normal visual acuity, and normal pupillary and fundus examinations.
    • The most frequent causes identified were arteriosclerosis (40%), uncal herniation (20%), and migraine (13%).

    Conclusions:

    • Arteriosclerosis is a leading cause of posterior cerebral artery insufficiency resulting in bilateral homonymous hemianopia.
    • Uncal herniation and migraine are also significant contributors to this visual field defect.
    • Prompt diagnosis and management of underlying causes are essential for patients with bilateral homonymous hemianopia.