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Diagnostic Performance and Repeatability of a Novel Game-Based Visual Field Test for Children
Tariq Mehmood Aslam1,2, Zaria Christine Ali1, Yanfang Wang2
1Manchester Royal Eye Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom.
Investigative Ophthalmology & Visual Science
|April 7, 2018
Summary
The game-based Caspar's Castle test shows promise for detecting visual field defects in children, offering improved sensitivity, specificity, and reliability for pediatric visual field assessment.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Visual Field Testing
Background:
- Assessing visual fields in children presents significant challenges with traditional perimetry methods.
- Early detection of visual field defects is crucial for timely intervention and management in pediatric eye care.
Purpose of the Study:
- To evaluate the utility of a novel game-based visual field test, Caspar's Castle, for detecting visual field defects in children.
- To determine the diagnostic accuracy (sensitivity and specificity) and reliability of the Caspar's Castle system.
Main Methods:
- A validity and reliability study involving 108 children without eye pathology (aged 4-12) and 21 children with diagnosed pathology (aged 4-16).
- Caspar's Castle system was used with normal and artificially created visual field defects to assess diagnostic utility.
- Sensitivity, specificity, receiver-operator characteristic curves, coefficient of repeatability, and Bland-Altman charts were employed for analysis.
Main Results:
- The area under the receiver-operator characteristic curve for artificial defect detection was 0.895, indicating good diagnostic performance.
- Caspar's Castle results corresponded with established field testing in children with known pathologies.
- The coefficient of repeatability for missed points was 6.9, demonstrating good test-retest reliability.
Conclusions:
- The Caspar's Castle system exhibits promising sensitivity, specificity, and reliability for visual field assessment in children.
- This game-based approach offers a potential solution to overcome current limitations in pediatric visual field testing.
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