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Strabismus Measurements with Novel Video Goggles
Konrad P Weber1, Daniel Rappoport2, Muriel Dysli1
1Department of Ophthalmology, University Hospital Zurich, University of Zurich, Switzerland; Department of Neurology, University Hospital Zurich, University of Zurich, Switzerland.
Ophthalmology
|July 22, 2017
Summary
A novel strabismus video goggle test accurately measures ocular deviations, showing good agreement with the Hess screen test. This noninvasive device is effective for patients with visual suppression and children as young as six.
Area of Science:
- Ophthalmology
- Vision Science
- Medical Devices
Background:
- Strabismus, or eye misalignment, is a common condition requiring accurate measurement for effective treatment.
- The Hess screen test is a conventional but sometimes limited method for assessing ocular deviations.
Purpose of the Study:
- To evaluate the diagnostic validity of a new, simplified, noninvasive strabismus video goggle test.
- To compare the performance of the video goggle test against the established Hess screen test.
Main Methods:
- A cross-sectional study compared strabismus video goggles with the Hess screen test in 41 patients with strabismus and 17 healthy volunteers (aged ≥6 years).
- Ocular deviations were measured using both methods on a 9-point target grid at various gaze positions.
- Intraclass correlation coefficients (ICC) were used to quantify agreement between the two tests.
Main Results:
- Good agreement was found between the strabismus video goggles and the Hess screen test for horizontal (ICC=0.83) and vertical (ICC=0.76) deviations.
- Both methods successfully reproduced strabismus patterns on the 9-point grid.
- The video goggles were effective in patients with visual suppression, unlike the Hess screen test.
Conclusions:
- The strabismus video goggle test is a simple, fast, and accurate tool for measuring ocular deviations.
- Its results closely correlate with the Hess screen test, offering a viable alternative, especially for patients with visual suppression.
- The device is suitable for use in children aged six and older.
