Frenzel Lens for Vertigo

Phase-Based Progress Estimates
Vertigo+5 More
Frenzel Lens - Device
All Sexes
What conditions do you have?

Study Summary

This trial is to see if a special sign found in the eyes can help assess patients with dizziness in the emergency department.

Eligible Conditions
  • Vertigo
  • Stroke, Acute
  • Nystagmus

Treatment Effectiveness

Effectiveness Progress

1 of 3

Study Objectives

1 Primary · 13 Secondary · Reporting Duration: From day 0 to 12 weeks

At 12 weeks
Rate of New Stroke at 12 weeks
Day 0
Initial managment self appreciation of patient presenting in the ED for an acute episode of vertigo/dizziness/imbalance
Rate of Nystagmus detection per participant
Rate of the use of Particules Repositionning Technique
Day 0
Emergency Department Lenght of stay
Week 12
Rate of subsequent Emergency Department Visit for Vertigo/dizziness/imbalance per participant
Week 12
Adverse Events
Rate of New Atrial Fibrillation
Rate of acute stroke per participant
Rate of acute vertigo/dizziness/imbalance related hospitalisation per participant
Rate of neuro-imaging per participant
Rate of specialised consultations for vertigo/dizziness/imbalance per participant
Rate of symptomatic central lesion per participant

Trial Safety

Safety Progress

1 of 3

Trial Design

4 Treatment Groups

No Frenzel Lens and No Diagnostic Algorithm
1 of 4
Frenzel Lens without Diagnostic Algorithm
1 of 4
No Frenzel Lens with Diagnostic Algorithm
1 of 4
Frenzel Lens with Diagnostic Algorithm
1 of 4

Active Control

Experimental Treatment

120 Total Participants · 4 Treatment Groups

Primary Treatment: Frenzel Lens · No Placebo Group · N/A

Frenzel Lens without Diagnostic Algorithm
Experimental Group · 1 Intervention: Frenzel Lens · Intervention Types: Device
No Frenzel Lens with Diagnostic Algorithm
Experimental Group · 1 Intervention: Diagnostic Algorithm · Intervention Types: DiagnosticTest
Frenzel Lens with Diagnostic AlgorithmExperimental Group · 2 Interventions: Frenzel Lens, Diagnostic Algorithm · Intervention Types: Device, DiagnosticTest
No Frenzel Lens and No Diagnostic AlgorithmNoIntervention Group · 1 Intervention: No Frenzel Lens and No Diagnostic Algorithm · Intervention Types:

Trial Logistics

Trial Timeline

Screening: ~3 weeks
Treatment: Varies
Reporting: from day 0 to 12 weeks

Who is running the clinical trial?

CHU de Quebec-Universite LavalLead Sponsor
152 Previous Clinical Trials
101,347 Total Patients Enrolled
Pierre La Rochelle, MD, MScPrincipal InvestigatorUniversite Laval

Eligibility Criteria

Age 18+ · All Participants · 2 Total Inclusion Criteria

Mark “Yes” if the following statements are true for you:
must be able to———.
I have been having a new episode of acute vertigo/dizziness/imbalance over the last week.

About The Reviewer

Michael Gill preview

Michael Gill - B. Sc.

First Published: October 12th, 2021

Last Reviewed: November 26th, 2022

Michael Gill holds a Bachelors of Science in Integrated Science and Mathematics from McMaster University. During his degree he devoted considerable time modeling the pharmacodynamics of promising drug candidates. Since then, he has leveraged this knowledge of the investigational new drug ecosystem to help his father navigate clinical trials for multiple myeloma, an experience which prompted him to co-found Power Life Sciences: a company that helps patients access randomized controlled trials.