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Related Experiment Video

Updated: Sep 5, 2025

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects
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False Positive Hemianopia.

Ravid Ben-Avi1, Addy Nahum2, Joshua M Kruger1

  • 1Department of Ophthalmology, Hadassah Medical Center, Jerusalem, Israel.

Case Reports in Ophthalmology
|July 11, 2022
PubMed
Summary
This summary is machine-generated.

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Routine visual field testing can produce artifactual results, mimicking true visual field defects. Careful review of automated visual field reports is crucial to avoid misdiagnosis of visual field loss.

Area of Science:

  • Neuro-ophthalmology
  • Visual field testing

Background:

  • Automated visual field testing is a common diagnostic tool in neuro-ophthalmology.
  • Interpreting visual field results requires careful consideration of various test parameters.

Observation:

  • A 70-year-old woman presented with bilateral nasal hemianopia on automated visual field testing.
  • Detailed analysis revealed the visual field defect to be artifactual due to excessive false positives and high sensitivity.
  • Confrontational and repeated visual field testing confirmed the absence of true hemianopia.

Findings:

  • Automated visual field testing can generate false positive results that mimic significant visual field defects.
  • Artifacts in visual field testing can arise from patient responses and machine sensitivity.
Keywords:
Bilateral hemianopiaBinasal hemianopiaVisual fields

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Last Updated: Sep 5, 2025

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  • Normal total deviation probability maps further supported the artifactual nature of the observed hemianopia.

    • Implications:

    • Clinicians must meticulously scrutinize all components of automated visual field reports.
    • Misinterpretation of visual field artifacts can lead to unnecessary patient anxiety and further investigations.
    • Understanding potential testing artifacts is essential for accurate neuro-ophthalmic diagnosis.