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[Visual field examination in limited patient cooperation]
1Augenklinik für Schielbehandlung und Neuroophthalmologie, Justus-Liebig-Universität Giessen.
Klinische Monatsblatter Fur Augenheilkunde
|April 4, 1998
Summary
Objective visual field testing offers alternatives when subjective perimetry is not feasible. These methods, using pupillary reflexes and eye movements, are valuable for specific patient groups and detecting visual field misrepresentations.
Area of Science:
- Ophthalmology
- Neuroscience
- Visual Science
Context:
- Conventional subjective perimetry is often impossible in infants, patients with disabilities, or those feigning visual field loss.
- Objective visual field estimation is crucial for accurate diagnosis in non-cooperative individuals.
- Detecting malingering and psychogenic visual field loss requires reliable objective assessment methods.
Purpose:
- To present objective methods for visual field estimation when subjective perimetry is not feasible.
- To highlight the utility of pupillary light reflexes, eye movements, and visual evoked potentials for objective visual field assessment.
- To introduce practical, equipment-light methods for reproducible visual field defect evaluation.
Summary:
- Objective visual field estimation can be achieved through pupillary light reflexes, voluntary/involuntary eye movements, and visual evoked potentials.
- Systematically false responses during testing provide valuable evidence of misrepresentation.
- Reproducibility of visual field defects can be verified by testing at varying screen distances.
Impact:
- Provides accessible objective visual field testing options for challenging patient populations.
- Enhances the ability to detect malingering and psychogenic visual field loss.
- Offers practical, low-equipment solutions for ophthalmologists and visual scientists.