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A new portable applanation tonometer.

M E Yablonski

    American Journal of Ophthalmology
    |September 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    A new portable applanation tonometer provides accurate intraocular pressure measurements, correlating well with standard methods. This device is compact, user-friendly, and allows for flexible patient positioning during tonometry.

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    Area of Science:

    • Ophthalmology
    • Biomedical Engineering
    • Medical Devices

    Background:

    • Accurate intraocular pressure (IOP) measurement is crucial for diagnosing and managing glaucoma.
    • Standard Goldmann applanation tonometry is the gold standard but requires a slit-lamp biomicroscope.
    • A need exists for portable, accurate tonometers for versatile clinical use.

    Purpose of the Study:

    • To evaluate the performance of a novel portable applanation tonometer.
    • To assess its correlation with the established Goldmann applanation tonometer.
    • To determine the usability and portability of the new device.

    Main Methods:

    • A portable applanation tonometer was developed using a Goldmann applanation doubling prism and a dynamometer.
    • Measurements were taken on 100 consecutive eyes.

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  • Results were compared against readings from a standard slit-lamp mounted applanation tonometer.

    • Main Results:

    • The portable tonometer demonstrated a good correlation with the standard Goldmann applanation tonometer.
    • The device is small, easy to operate, and uses the same endpoint detection method.
    • Patients could be examined in various positions, enhancing clinical flexibility.

    Conclusions:

    • The portable applanation tonometer is a viable alternative to traditional methods.
    • Its portability and ease of use make it suitable for diverse clinical settings.
    • The device maintains accuracy comparable to the Goldmann standard.