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Background <p>A practical bedside device with videonystagmography (VNG)-like diagnostic capabilities could support clinical vestibular assessment.</p> Method <p>A 3D-printed Smartphone Video-Frenzel Device (SVFD) featuring a magnetic mounting system was developed, allowing rapid attachment and removal. Frontal illumination from the smartphone flashlight suppressed ocular fixation (OF), and the macro camera enabled high-resolution video recording with superior torsional detail compared with VNG.</p> Conclusion <p>The SVFD appears to be a feasible and accessible option for vestibular evaluation, combining effective OF suppression with high-quality video recording and a modifiable design, with future potential for quantitative nystagmus analysis.</p>

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A Self-Made smartphone video frenzel device

  • 期刊论文

  • 发表日期：

    2025年11月23日

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  • Halil Erdem Özel

摘要

Background

A practical bedside device with videonystagmography (VNG)-like diagnostic capabilities could support clinical vestibular assessment.

Method

A 3D-printed Smartphone Video-Frenzel Device (SVFD) featuring a magnetic mounting system was developed, allowing rapid attachment and removal. Frontal illumination from the smartphone flashlight suppressed ocular fixation (OF), and the macro camera enabled high-resolution video recording with superior torsional detail compared with VNG.

Conclusion

The SVFD appears to be a feasible and accessible option for vestibular evaluation, combining effective OF suppression with high-quality video recording and a modifiable design, with future potential for quantitative nystagmus analysis.