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Perimetry update.

W Leydhecker

    Annals of Ophthalmology
    |June 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Computer-assisted static perimetry eliminates examiner bias, but patient factors cause fluctuations. Adaptive strategies and optimized stimulus grids are key for reproducible visual field testing results.

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    Area of Science:

    • Ophthalmology
    • Medical Technology
    • Visual Science

    Background:

    • Computer-assisted static perimetry offers advantages over manual methods by removing examiner influence.
    • Patient-related physiological and psychological factors can still introduce variability in test results.

    Purpose of the Study:

    • To evaluate the applications of computer-assisted static perimetry based on five years of controlled studies.
    • To identify key factors for reproducible results in computerized perimetry.

    Main Methods:

    • Analysis of different types of computerized perimeters and their strategies.
    • Examination of stimulus grid density and adaptive threshold measurement techniques.
    • Review of software programs and their incorporation of clinical experience.

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    Main Results:

    • Elimination of perimetrist influence is a common advantage of computerized perimeters.
    • Adaptive strategies, not nonadaptive ones, yield high sensitivity and specificity.
    • Optimized stimulus distribution (denser in suspicious areas) and exact threshold measurements in those areas offer a good compromise between test duration and accuracy.

    Conclusions:

    • Adaptive strategies are crucial for accurate and reproducible visual field testing.
    • Understanding perimetry parameters (e.g., asb, dB, stimulus diameter) and software capabilities is essential for clinicians.
    • Modern computerized perimeters, particularly their software, are vital tools for diagnosing and monitoring visual field alterations.