Capturing nystagmus during vertigo attacks using a smartphone: adherence, characteristics, pearls and pitfalls

Area of Science:

• Neurology
• Ophthalmology
• Vestibular Medicine

Background:

• Episodic vestibular symptoms pose diagnostic challenges.
• Ictal nystagmus is a key diagnostic indicator.
• Current diagnostic methods may require complementary approaches.

Purpose of the Study:

• To evaluate the feasibility of capturing ictal nystagmus at home using smartphones.
• To assess patient adherence and experiences with this method.
• To explore the clinical utility of patient-recorded ictal nystagmus.

Main Methods:

• Patients with episodic vestibular symptoms were recruited.
• Participants used a smartphone-based adapter (Nystagmocatcher) to record ictal nystagmus at home.
• Recordings were analyzed for adherence, characteristics, and diagnostic contribution.

Main Results:

• 89% of patients agreed to participate; 51% provided analyzable recordings.
• Various nystagmus types were identified, aiding diagnosis of BPPV and vestibular disorders.
• The method showed potential for telemedicine and monitoring attack frequency.

Conclusions:

• Home-based ictal nystagmus capture can significantly aid vestibular disorder diagnosis.
• Strict patient guidance is necessary for optimal results.
• This technique is recommended for outpatient use on indication to complement diagnostics.