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Computerized kinetic perimetry detects tubular visual fields in patients with functional visual loss
Stacy L Pineles1, Nicholas J Volpe
1Department of Ophthalmology, Scheie Eye Institute, University of Pennsylvania School of Medicine, 51 North 39th Street, Philadelphia, PA 19104, USA.
American Journal of Ophthalmology
|May 6, 2004
Summary
A new computerized kinetic perimetry test effectively identifies tubular visual fields in patients with functional visual loss. This novel method offers an objective and easy-to-use approach for diagnosing visual field defects.
Area of Science:
- Ophthalmology
- Neuroscience
Background:
- Functional visual loss can present with generalized visual field constriction.
- Accurate detection of tubular visual fields is crucial for diagnosis and management.
- Traditional methods like tangent screen testing can be subjective.
Purpose of the Study:
- To introduce and evaluate a novel test using computerized kinetic perimetry to detect tubular visual fields.
- To assess the utility of this test in patients with functional visual loss.
Main Methods:
- An observational case series involving ten patients with prior generalized visual field constriction.
- Testing combined computerized kinetic perimetry with a reversed Galilean telescope for optical visual field expansion.
Main Results:
- Six patients with physiologic constriction showed visual field expansion using the reversed telescope.
- Four patients with functional visual loss demonstrated tubular visual fields, with responses similar to or smaller than baseline.
Conclusions:
- The computerized kinetic examination reduces subjectivity compared to tangent screen testing.
- This novel, easy-to-use technique provides computerized recording of visual fields.
- It is an effective method for demonstrating functional visual loss.
