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Related Experiment Videos

How effective is perimetry in current practice?

J D Trobe

    Ophthalmology
    |November 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Nonphysician perimetrists detected visual field defects only 69% of the time. Hemianopic defects were missed frequently, suggesting CT scans for unexplained vision loss may be needed.

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    Area of Science:

    • Ophthalmology
    • Neuroscience

    Background:

    • Visual field testing is crucial for detecting neurological and ophthalmic conditions.
    • Previous assessments of perimetry performance have varied.

    Purpose of the Study:

    • To evaluate the diagnostic accuracy of nonphysician perimetrists in community ophthalmic practices.
    • To determine the detection rates of various visual field defects, particularly hemianopias.

    Main Methods:

    • A study sampled the performance of nonphysician perimetrists in community ophthalmic settings.
    • Detection rates for any visual field defect and specific types (nasal steps, hemianopias) were analyzed.

    Main Results:

    • The average detection rate for any visual field defect was 69%.

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  • Nasal steps were identified with higher accuracy (77%) compared to hemianopic defects (44%).

    • Conclusions:

    • Low accuracy in detecting hemianopias suggests potential underdiagnosis.
    • Consideration of CT scans for unexplained visual loss is recommended.
    • Improving perimetry accuracy may involve enhanced training, optimized strategies, and automated devices.