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Related Experiment Videos

[Automated kinetic perimetry using different stimulus velocities].

B Wabbels1, G Kolling

  • 1Universitäts-Augenklinik, Im Neuenheimer Feld 400, 69120 Heidelberg. bettina_wabbels@med.uni-heidelberg.de

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|March 27, 2001
PubMed
Summary

Automated kinetic perimetry (AKP) results vary with stimulus size and velocity. Smaller stimuli (I2, I1) show decreased isopter size and increased variance at higher velocities, impacting standardization.

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Area of Science:

  • Ophthalmology
  • Visual Science
  • Medical Technology

Background:

  • Manual kinetic perimetry (KP) lacks standardization due to manual execution.
  • Variability in KP findings necessitates exploring automated methods for consistency.

Purpose of the Study:

  • To assess the impact of varying stimulus velocities on automated kinetic perimetry (AKP) outcomes.
  • To identify optimal parameters for standardized visual field testing.

Main Methods:

  • Twelve healthy subjects underwent kinetic perimetry using the Twinfield perimeter.
  • Stimuli III4, I4, I2, and I1 were tested at velocities ranging from 1 to 7 degrees/second.

Main Results:

  • Stimuli III4 and I4 showed no velocity-dependent changes in results.

Related Experiment Videos

  • Stimuli I2 and I1 exhibited narrower isopters and increased variance at velocities above 4 degrees/second.

    • Conclusions:

    • Exceeding the recommended 2 degrees/second velocity in clinical practice contributes to result variation.
    • Automated kinetic perimetry offers potential for improved standardization through controlled velocities.