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Related Experiment Videos

The learning and fatigue effect in automated perimetry.

G Marra1, J Flammer

  • 1University Eye Clinic Basel, Switzerland.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|January 1, 1991
PubMed
Summary

Visual field testing showed stable sensitivity in most participants, with no significant learning or fatigue effects observed. However, patients with refractive errors, particularly myopia, demonstrated a greater learning effect.

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Area of Science:

  • Ophthalmology
  • Visual Science

Background:

  • Visual field testing is crucial for diagnosing and monitoring eye conditions.
  • Understanding potential learning or fatigue effects is important for test reliability.

Purpose of the Study:

  • To investigate learning and fatigue effects during a single visual field testing session.
  • To assess the influence of training, eye health, and refractive error on visual field test outcomes.

Main Methods:

  • 100 volunteers underwent visual field testing using the Octopus program J1.
  • Thresholds were measured 12 times across 3 locations within one session.

Main Results:

  • Visual sensitivity remained largely stable throughout the testing session for most participants.

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  • No significant differences were found between trained and untrained subjects or between normal and pathological eyes.
  • A notable learning effect was observed in patients with refractive errors, especially myopes, compared to emmetropes.

    • Conclusions:

    • Visual field testing demonstrates good stability within a single session for the majority of individuals.
    • Refractive errors, particularly myopia, can influence learning effects in visual field testing, suggesting potential need for tailored protocols.