Vestibular HypofunctionNCT07380256
Visual Influences on Vestibular Adaptation
A study testing StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA) in people with Vestibular Hypofunction and Binocular Vision Abnormalities, run by Emory University at 2 sites in United States.
Trial summary
The goal of this study is to learn whether a balance-training exercise called incremental vestibulo-ocular reflex adaptation (IVA) is safe and effective for adults with vision impairments, with or without additional vestibular (inner-ear balance) problems. Read more about this study
- Who is it for?
- Ages 18 to 60 years
- Conditions the study is for
- Vestibular Hypofunction, Binocular Vision Abnormalities, Reduced Vision
- What is being tested?
- StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- 2 sitesUnited States
- Study dates
- 4 Feb 2026to Dec 2029
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 60 years
- All sexes
- No healthy volunteers
- Adult
Who may be able to join
- For All Participants (All Groups)
- Age 18 to 60 years
- Able to provide informed consent
- Group-Specific Inclusion Criteria:
- Group 1: Abnormal Uncorrected Static Visual Acuity (No Vestibular Hypofunction) Normal peripheral vestibular function
- Group 2: Abnormal Uncorrected Static Visual Acuity + peripheral Vestibular Hypofunction
Show all 16Show fewer
- Group 3: Binocular Vision Abnormalities (No Vestibular Hypofunction) Normal peripheral vestibular function
- Group 4: Binocular Vision Abnormalities + peripheral Vestibular Hypofunction
- Individuals who have abnormal static visual acuity, a binocular vision abnormality (ocular misalignment, convergence insufficiency), and vestibular loss will be assigned to Group 4.
- The following definitions will be used when determining group placement:
- Abnormal Static Visual Acuity: Uncorrected visual acuity (head is still) ≥0.30 logMAR in both eyes.
- Unilateral Vestibular Hypofunction: 60 ms VOR gain <0.80 unilaterally for the lateral semicircular canal.
- Bilateral Vestibular Hypofunction: 60 ms VOR gain <0.80 bilaterally for the lateral semicircular canals.
- Normal Vestibular Function: 60 ms VOR gain of 0.80 to 1.20 bilaterally for the lateral semicircular canals.
- Convergence Insufficiency: ≥6 cm near point of convergence.
- Ocular Misalignment: ≥4 prism diopters of manifest deviation of the eyes (tropia) on cover/uncover testing.
Who cannot join
- Diagnosis of fluctuating vestibular disorders (e.g., benign paroxysmal positional vertigo)
- Neurologic conditions (e.g., multiple sclerosis), dementia,
- Alcohol or drug abuse,
- A major psychiatric disorder (e.g., schizophrenia),
- Pain that limits cervical spine range of motion by >50% or that results in an -altered gait pattern.
Trial locations and contacts
2 sites in 1 country. Contact the study team or a site near you to ask about taking part.
Hannah M Morris contact
United States2 sites, 2 recruiting
- Not yet recruiting
Emory Ophthalmology Clinics
Atlanta, Georgia, 30322
Jason Peragallo, MD
Hannah Morris, hannah.m.morris@emory.edu
- Recruiting
Dizziness and Balance Center
Atlanta, Georgia, 30329
Colin Grove, PT, DPT, PhD, 404-712-8685, colin.r.grove@emory.edu
David Sandlin, MD
About this study
Official title: Effects of Impaired Visual Acuity and Binocular Control Abnormalities (VABC) on Vestibulo-ocular Reflex (VOR) Adaptation in Adults With and Without Vestibular Hypofunction
The goal of this study is to learn whether a balance-training exercise called incremental vestibulo-ocular reflex adaptation (IVA) is safe and effective for adults with vision impairments, with or without additional vestibular (inner-ear balance) problems.
The main questions it aims to answer are:
Read more
- Does IVA cause only mild, temporary symptoms and no serious adverse events?
- Does IVA improve eye-movement reflexes, balance, and walking, and do these improvements differ between people with vision problems alone and those with both vision and vestibular impairments?
Researchers will compare adults with vision impairment only to adults who have both vision and vestibular impairments to see whether the groups respond differently to IVA.
Participants will:
- Complete symptom ratings before and after IVA
- Undergo tests of vestibular reflexes (e.g., VOR gain)
- Complete balance and walking assessments
Read the detailed description
Impairment of vestibular pathways can lead to deficits in balance, gait, and gaze stability. Gaze-stability exercises are a central component of vestibular rehabilitation and have been shown to improve vision during head movement as well as functional mobility in individuals with peripheral or central vestibular dysfunction. Improvements in gaze stability may occur through vestibulo-ocular reflex (VOR) adaptation or through compensatory saccadic eye movements. However, many adults with vestibular hypofunction also present with uncorrected visual acuity deficits or binocular vision abnormalities, such as low vision, convergence insufficiency, or ocular misalignment. These visual conditions are common but understudied in the context of vestibular rehabilitation, and it is not known whether they limit the capacity for VOR adaptation.
Incremental vestibulo-ocular reflex adaptation (IVA) is a non-invasive, 15-minute training method that strengthens the VOR by exposing users to a controlled visual error signal. IVA uses a moving laser target whose velocity is programmed as a function of the participant's head movement, producing immediate increases in VOR gain. The method can be customized to provide unilateral, bilateral, or asymmetric adaptation, allowing targeted training for individuals with unilateral or bilateral vestibular deficits. IVA has been studied extensively in adults with vestibular hypofunction, but its effectiveness in individuals with impaired visual acuity or binocular vision abnormalities has not been evaluated.
This study will examine whether reduced static visual acuity or binocular vision abnormalities affect the magnitude of VOR adaptation in adults with and without vestibular hypofunction. Two experiments will be conducted using a cross-over design. Experiment 1 will enroll adults with abnormal uncorrected static visual acuity, with and withoutvestibular hypofunction, to compare VOR adaptation with and without vision correction. Experiment 2 will enroll adults with binocular vision abnormalities, with and without vestibular hypofunction, to evaluate VOR adaptation in their best corrected visual state. All participants will complete IVA training during two study visits separated by a washout period.
- Being tested
- StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)
- Keywords
- vestibulo-ocular reflex, incremental vestibulo-ocular reflex adaptation, abnormal uncorrected static visual acuity, Gait Disorientation Test, video head impulse test, vertical and torsional alignment nulling, dynamic visual acuity test, modified Clinical Test of Sensory Interaction in Balance
- Medical subject headings
- Vision, Low
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)Device
IVA is delivered using the StableEyes device, which includes a lightweight head-mounted unit with inertial sensors and a micromirror that controls the position of a low-power laser target projected onto a wall. The device adjusts the target's movement based on the participant's head velocity to create a controlled visual error signal that induces vestibulo-ocular reflex (VOR) adaptation. During each session, participants sit about one meter from a blank wall and perform rapid, self-generated head impulses while visually tracking the moving laser target. The target appears at neutral, moves at a fraction of head velocity during each impulse, and briefly disappears before reappearing at center. Each session lasts 15 minutes and includes roughly 150 head impulses in the horizontal or vertical plane. The procedure has been well-tolerated in prior studies with no reported adverse events.
| Study group | Role | What they receive |
|---|---|---|
| Group 1: Abnormal Uncorrected Static Visual Acuity (No Vestibular Hypofunction) | Experimental | Adults with abnormal uncorrected distance visual acuity and normal vestibular function.
This group will be part of Experiment 1. This experiment studies people whose main visual problem is reduced uncorrected distance visual acuity (i.e., blurry vision without glasses/contacts).
Experiment 1 tests the effect of blurry vision on VOR adaptation Receives: Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA) |
| Group 2: Abnormal Uncorrected Static Visual Acuity + Vestibular Hypofunction | Experimental | Adults with abnormal uncorrected distance visual acuity and unilateral vestibular hypofunction.
This group will be part of Experiment 1. This experiment studies people whose main visual problem is reduced uncorrected distance visual acuity (i.e., blurry vision without glasses/contacts).
Experiment 1 tests the effect of blurry vision on VOR adaptation Receives: Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA) |
| Group 3: Binocular Vision Abnormalities (No Vestibular Hypofunction) | Experimental | Adults with binocular vision abnormalities (e.g., convergence insufficiency, ocular misalignment) and normal vestibular function.
This group will be part of Experiment 2. This experiment studies people whose main visual problem is how the two eyes work together (e.g., convergence insufficiency, ocular misalignment).
Experiment 2 tests the effect of binocular vision dysfunction on VOR adaptation Receives: Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA) |
| Group 4: Binocular Vision Abnormalities + Vestibular Hypofunction | Experimental | Adults with binocular vision abnormalities and unilateral vestibular hypofunction.
This group will be part of Experiment 2. This experiment studies people whose main visual problem is how the two eyes work together (e.g., convergence insufficiency, ocular misalignment).
Experiment 2 tests the effect of binocular vision dysfunction on VOR adaptation Receives: Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Vestibulo-Ocular Reflex (VOR) Gain
VOR gain will be measured using the video head impulse test (vHIT). Gain is calculated as eye velocity divided by head velocity during high-acceleration, moderate velocity, small amplitude head rotations in the plane of the semicircular canals. This outcome quantifies the strength of the vestibulo-ocular reflex, with higher gain values indicating stronger VOR responses, with normal gain = 0.8 to 1.2. The change in VOR gain from before to after training will be used to assess VOR adaptation.
IVA: Incremental Vestibulo-Ocular Reflex Adaptation
Measured: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
Secondary outcomes (3)
Change in Modified Clinical Test of Sensory Interaction in Balance (mCTSIB)
Participants stand under four sensory conditions (eyes open/closed on firm/foam surfaces). Outcomes include time maintained (0-120 seconds) and postural sway metrics from inertial measurement units. Higher times indicate better balance.
Measured: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
Change in Gait Disorientation Test (GDT)
Participants walk 20 feet with eyes open and eyes closed. The GDT score is the difference in time between the two conditions. Larger differences indicate greater gait disorientation.
Measured: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
Symptom Severity During IVA (Verbal Analog Scales)
Symptom tolerance during incremental VOR adaptation (IVA) will be assessed using verbal analog scales. Participants will rate the severity of blurry vision, eye strain, dizziness, and headache on 0-10 scales, where 0 indicates no symptoms and 10 indicates the worst imaginable symptoms. Ratings will be collected immediately before and after each IVA session to quantify changes in self-reported symptom severity.
Measured: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Feb 2026
- Study start4 Feb 2026
- Primary completionDec 2029 (estimated)
- Study completionDec 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Vestibular HypofunctionStudies of the same condition, open and under way.
- More trials run by Emory UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- Participants will be randomized for the vision condition (with or without correction) in which they will perform IVA during the first study visit. At the second study visit, all participants will cross over to perform IVA in the opposite vision condition
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Emory University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Colin R. Grove, Emory University
- Investigators
- Colin Grove, PT, DPT, PhD, Principal investigator, Emory University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07380256
- Sponsor's protocol ID
- 2025P012555
- Status last verified
- Apr 2026
- First submitted
- 20 Jan 2026
- Last updated
- 17 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- Yes: A complete de-identified dataset will be shared.
Study at a glance
From the registry record, last updated by the sponsor on 17 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Impaired Visual Acuity and Binocular Control Abnormalities (VABC) on Vestibulo-ocular Reflex (VOR) Adaptation in Adults With and Without Vestibular Hypofunction
- ClinicalTrials.gov ID
- NCT07380256
- Acronym / sponsor ID
- 2025P012555
- Keywords
- vestibulo-ocular reflex, incremental vestibulo-ocular reflex adaptation, abnormal uncorrected static visual acuity, Gait Disorientation Test, video head impulse test, vertical and torsional alignment nulling, dynamic visual acuity test, modified Clinical Test of Sensory Interaction in Balance
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Emory UniversityUniversity, hospital or other
- Study start
- 4 Feb 2026 (actual)
- Primary completion
- Dec 2029 (estimated)
- Study completion
- Dec 2029 (estimated)
- First posted
- 2 Feb 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The goal of this study is to learn whether a balance-training exercise called incremental vestibulo-ocular reflex adaptation (IVA) is safe and effective for adults with vision impairments, with or without additional vestibular (inner-ear balance) problems.
The main questions it aims to answer are:
- Does IVA cause only mild, temporary symptoms and no serious adverse events?
- Does IVA improve eye-movement reflexes, balance, and walking, and do these improvements differ between people with vision problems alone and those with both vision and vestibular impairments?
Researchers will compare adults with vision impairment only to adults who have both vision and vestibular impairments to see whether the groups respond differently to IVA.
Participants will:
- Complete symptom ratings before and after IVA
- Undergo tests of vestibular reflexes (e.g., VOR gain)
- Complete balance and walking assessments
Detailed description
Impairment of vestibular pathways can lead to deficits in balance, gait, and gaze stability. Gaze-stability exercises are a central component of vestibular rehabilitation and have been shown to improve vision during head movement as well as functional mobility in individuals with peripheral or central vestibular dysfunction. Improvements in gaze stability may occur through vestibulo-ocular reflex (VOR) adaptation or through compensatory saccadic eye movements. However, many adults with vestibular hypofunction also present with uncorrected visual acuity deficits or binocular vision abnormalities, such as low vision, convergence insufficiency, or ocular misalignment. These visual conditions are common but understudied in the context of vestibular rehabilitation, and it is not known whether they limit the capacity for VOR adaptation.
Incremental vestibulo-ocular reflex adaptation (IVA) is a non-invasive, 15-minute training method that strengthens the VOR by exposing users to a controlled visual error signal. IVA uses a moving laser target whose velocity is programmed as a function of the participant's head movement, producing immediate increases in VOR gain. The method can be customized to provide unilateral, bilateral, or asymmetric adaptation, allowing targeted training for individuals with unilateral or bilateral vestibular deficits. IVA has been studied extensively in adults with vestibular hypofunction, but its effectiveness in individuals with impaired visual acuity or binocular vision abnormalities has not been evaluated.
This study will examine whether reduced static visual acuity or binocular vision abnormalities affect the magnitude of VOR adaptation in adults with and without vestibular hypofunction. Two experiments will be conducted using a cross-over design. Experiment 1 will enroll adults with abnormal uncorrected static visual acuity, with and withoutvestibular hypofunction, to compare VOR adaptation with and without vision correction. Experiment 2 will enroll adults with binocular vision abnormalities, with and without vestibular hypofunction, to evaluate VOR adaptation in their best corrected visual state. All participants will complete IVA training during two study visits separated by a washout period.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (participant, investigator)
- Number of arms
- 4
- Model description
- Participants will be randomized for the vision condition (with or without correction) in which they will perform IVA during the first study visit. At the second study visit, all participants will cross over to perform IVA in the opposite vision condition
| Arm | Type | Receives |
|---|---|---|
| Group 1: Abnormal Uncorrected Static Visual Acuity (No Vestibular Hypofunction) | Experimental | Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)Adults with abnormal uncorrected distance visual acuity and normal vestibular function. This group will be part of Experiment 1. This experiment studies people whose main visual problem is reduced uncorrected distance visual acuity (i.e., blurry vision without glasses/contacts). Experiment 1 tests the effect of blurry vision on VOR adaptation |
| Group 2: Abnormal Uncorrected Static Visual Acuity + Vestibular Hypofunction | Experimental | Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)Adults with abnormal uncorrected distance visual acuity and unilateral vestibular hypofunction. This group will be part of Experiment 1. This experiment studies people whose main visual problem is reduced uncorrected distance visual acuity (i.e., blurry vision without glasses/contacts). Experiment 1 tests the effect of blurry vision on VOR adaptation |
| Group 3: Binocular Vision Abnormalities (No Vestibular Hypofunction) | Experimental | Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)Adults with binocular vision abnormalities (e.g., convergence insufficiency, ocular misalignment) and normal vestibular function. This group will be part of Experiment 2. This experiment studies people whose main visual problem is how the two eyes work together (e.g., convergence insufficiency, ocular misalignment). Experiment 2 tests the effect of binocular vision dysfunction on VOR adaptation |
| Group 4: Binocular Vision Abnormalities + Vestibular Hypofunction | Experimental | Device: StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)Adults with binocular vision abnormalities and unilateral vestibular hypofunction. This group will be part of Experiment 2. This experiment studies people whose main visual problem is how the two eyes work together (e.g., convergence insufficiency, ocular misalignment). Experiment 2 tests the effect of binocular vision dysfunction on VOR adaptation |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (16 listed)
- For All Participants (All Groups)
- Age 18 to 60 years
- Able to provide informed consent
- Group 1: Abnormal Uncorrected Static Visual Acuity (No Vestibular Hypofunction) Normal peripheral vestibular function
- Group 2: Abnormal Uncorrected Static Visual Acuity + peripheral Vestibular Hypofunction
Key exclusion criteria (5 listed)
- Diagnosis of fluctuating vestibular disorders (e.g., benign paroxysmal positional vertigo)
- Neurologic conditions (e.g., multiple sclerosis), dementia,
- Alcohol or drug abuse,
- A major psychiatric disorder (e.g., schizophrenia),
- Pain that limits cervical spine range of motion by >50% or that results in an -altered gait pattern.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA)IVA is delivered using the StableEyes device, which includes a lightweight head-mounted unit with inertial sensors and a micromirror that controls the position of a low-power laser target projected onto a wall. The device adjusts the target's movement based on the participant's head velocity to create a controlled visual error signal that induces vestibulo-ocular reflex (VOR) adaptation. During each session, participants sit about one meter from a blank wall and perform rapid, self-generated head impulses while visually tracking the moving laser target. The target appears at neutral, moves at a fraction of head velocity during each impulse, and briefly disappears before reappearing at center. Each session lasts 15 minutes and includes roughly 150 head impulses in the horizontal or vertical plane. The procedure has been well-tolerated in prior studies with no reported adverse events. | Device | Group 1: Abnormal Uncorrected Static Visual Acuity (No Vestibular Hypofunction), Group 2: Abnormal Uncorrected Static Visual Acuity + Vestibular Hypofunction, Group 3: Binocular Vision Abnormalities (No Vestibular Hypofunction), Group 4: Binocular Vision Abnormalities + Vestibular Hypofunction |
Primary outcome
Change in Vestibulo-Ocular Reflex (VOR) Gain
Time frame: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
VOR gain will be measured using the video head impulse test (vHIT). Gain is calculated as eye velocity divided by head velocity during high-acceleration, moderate velocity, small amplitude head rotations in the plane of the semicircular canals. This outcome quantifies the strength of the vestibulo-ocular reflex, with higher gain values indicating stronger VOR responses, with normal gain = 0.8 to 1.2. The change in VOR gain from before to after training will be used to assess VOR adaptation. IVA: Incremental Vestibulo-Ocular Reflex Adaptation
3 secondary outcomes
Change in Modified Clinical Test of Sensory Interaction in Balance (mCTSIB)
Time frame: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
Change in Gait Disorientation Test (GDT)
Time frame: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
Symptom Severity During IVA (Verbal Analog Scales)
Time frame: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Apr 2026.
- Individual participant dataSharing planned: Yes. A complete de-identified dataset will be shared.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Hannah M Morris contact
Colin Grove, PT, DPT, PhD principal investigator
Emory University
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing StableEyes: Incremental Vestibulo-Ocular Reflex Adaptation (IVA) in people with Vestibular Hypofunction and Binocular Vision Abnormalities, run by Emory University at 2 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 16 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 17 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Colin R Grove, PT,DPT,PhD ((404) 712-8685, colin.riess.grove@emory.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Vestibulo-Ocular Reflex (VOR) Gain (time frame: Baseline (visit 1) (before and after after IVA intervention), Visit 2 (2-10 days from baseline) (before and after IVA intervention)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Apr 2026.