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Related Experiment Video

Updated: Jan 10, 2026

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Published on: March 14, 2017

A Self-Made smartphone video frenzel device.

Halil Erdem Özel¹

¹Department of Otolaryngology, University of Health Sciences, Kocaeli City Hospital, Kocaeli, Turkey. heozel@yahoo.com.

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery

|November 23, 2025

Summary

A new 3D-printed Smartphone Video-Frenzel Device (SVFD) offers bedside vestibular assessment. This accessible tool effectively suppresses ocular fixation and records high-quality nystagmus video for improved diagnostics.

Keywords:

3D-printing Nystagmus Ocular fixation Smartphone Vertigo Video-Frenzel

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Last Updated: Jan 10, 2026

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Published on: March 14, 2017

Smartphone Fundus Photography

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Published on: July 6, 2017

Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment

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Published on: December 11, 2015

Area of Science:

Ophthalmology
Neurology
Biomedical Engineering

Background:

Clinical vestibular assessment is crucial for diagnosing balance disorders.
Existing videonystagmography (VNG) equipment can be costly and less accessible for bedside use.
There is a need for practical, affordable devices to aid in vestibular evaluation.

Purpose of the Study:

To develop a practical, bedside device with diagnostic capabilities similar to videonystagmography (VNG).
To create an accessible tool for enhanced clinical vestibular assessment.

Main Methods:

A 3D-printed Smartphone Video-Frenzel Device (SVFD) was engineered with a magnetic mounting system for quick setup.
The smartphone's flashlight was utilized for frontal illumination to suppress ocular fixation (OF).
The device's macro camera facilitated high-resolution video recording, capturing superior torsional detail compared to traditional VNG.

Main Results:

The SVFD demonstrated effective suppression of ocular fixation (OF).
High-resolution video recording with excellent torsional detail was achieved, surpassing VNG capabilities.
The device's design proved modifiable and user-friendly for rapid attachment and removal.

Conclusions:

The Smartphone Video-Frenzel Device (SVFD) presents a feasible and accessible solution for vestibular evaluation.
The SVFD combines effective ocular fixation suppression with high-quality video recording.
Future applications may include quantitative nystagmus analysis, enhancing diagnostic potential.