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Visual dysfunction with basal skull tumours.

J A Sharpe

    The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques
    |November 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    Early detection of basal skull tumors relies on assessing the pregeniculate optic pathway. Visual field defects and pupillary responses indicate optic nerve dysfunction, necessitating advanced imaging for progressive vision loss.

    Area of Science:

    • Ophthalmology
    • Neurology
    • Oncology

    Background:

    • Basal skull tumors can cause significant visual impairment.
    • Early identification of visual loss is crucial for timely intervention.

    Purpose of the Study:

    • To outline systematic methods for detecting visual loss from basal skull tumors.
    • To emphasize the role of specific visual pathway tests in diagnosis.

    Main Methods:

    • Systematic testing of the pregeniculate optic pathway.
    • Utilizing relative afferent pupillary defect and color perception tests.
    • Employing confrontation visual field testing, static, and kinetic perimetry.

    Main Results:

    • Relative afferent pupillary defect and reduced color perception indicate optic nerve dysfunction, even with preserved central acuity.

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  • Visual field patterns and optic nerve atrophy offer limited localization of tumors.
  • Progressive vision loss mandates comprehensive neuroradiologic evaluation.

    • Conclusions:

    • Systematic visual pathway testing is key for early detection of visual loss due to basal skull tumors.
    • Advanced imaging is essential for unexplained, progressive vision loss potentially caused by these tumors.