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Related Experiment Videos

Drusen in the optic nerve head. Verification by computerized tomography

L Frisén, G Schöldström, P Svendsen

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |September 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    Computerized tomography (CT) reveals increased x-ray absorption in optic nerve head drusen, indicating high calcium content. This imaging technique is valuable for diagnosing disc swelling and related optic nerve conditions.

    Area of Science:

    • Ophthalmology
    • Radiology
    • Neuroscience

    Background:

    • Optic nerve head drusen are calcified deposits that can cause visual field defects and disc swelling.
    • Accurate diagnosis of optic nerve head drusen is crucial for appropriate patient management.

    Observation:

    • Five patients with suspected buried or exposed optic nerve head drusen underwent computerized tomography (CT).
    • Relative x-ray absorption in the nerve heads of patients was significantly higher compared to control subjects.

    Findings:

    • The increased x-ray absorption observed in CT scans directly correlates with the high calcium content characteristic of optic nerve head drusen.
    • Computerized tomography, especially high-definition CT, effectively visualizes these calcified structures.

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    Implications:

    • CT imaging offers a valuable, non-invasive method for confirming the presence and extent of optic nerve head drusen.
    • High-definition CT should be considered in the diagnostic workup for patients presenting with unexplained disc swelling.
    • This diagnostic approach can aid in differentiating optic nerve head drusen from other causes of papilledema.