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Related Experiment Videos

Computerized meridian perimetry. A preliminary report

C Holmin, C E Krakau

    Acta Ophthalmologica
    |January 1, 1980
    PubMed
    Summary
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    Computerized perimetry using the "Competer" system allows for meridian testing by displaying test points in two rounds. This method effectively demonstrates visual field stability in normal subjects and threshold decay in glaucoma patients over time.

    Area of Science:

    • Ophthalmology
    • Visual Psychophysics

    Background:

    • Standard perimetry can be time-consuming.
    • Accurate visual field assessment is crucial for diagnosing and monitoring eye conditions like glaucoma.

    Purpose of the Study:

    • To adapt the computerized perimeter "Competer" for meridian testing.
    • To evaluate the stability of visual thresholds in normal subjects and their decay in glaucomatous defects.

    Main Methods:

    • A modified display of test points was implemented on the "Competer" system.
    • A two-round testing program estimated visual thresholds, with the second round commencing after the first.
    • Two separate meridian profiles and a smoothed profile from mean values were generated.

    Main Results:

    Related Experiment Videos

  • The modified computerized perimeter successfully performed meridian testing.
  • Visual field threshold stability was observed in normal subjects.
  • A demonstrable decay in visual thresholds was noted in glaucomatous areas over time.

    • Conclusions:

    • The adapted "Competer" system provides a viable method for meridian testing.
    • This approach effectively differentiates between stable visual fields in normals and progressive defects in glaucoma.