Oculomotor Assessment of Traumatic Brain Injury (TBI)

Study Overview
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Brief Summary
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The purpose of the proposed study is to compare the sensitivity and specificity of three oculomotor test devices in normal subjects versus subjects with history of TBI. The study is designed as a prospective research project in which a group of 120 normal controls without a history of TBI will be compared to another group of 120 participants (total of 240) who have a confirmed history of TBI. Each participant will complete the TBI assessment protocol for each of three separate devices (Neuro Kinetics, SyncThink, and Oculogica). The order of the devices will be counter-balanced across participants. Participants will also be screened for vestibular migraine and visual vertigo, which are two conditions that influence oculo-vestibular perception in normal and TBI patients and might influence the results from the three oculomotor devices. Data from each device will be utilized to perform AUC analyses to determine the respective sensitivity and specificity for each.

Official Title
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Oculomotor Assessment of Traumatic Brain Injury (TBI)

Conditions
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Traumatic Brain Injury

Intervention / Treatment
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* Device: Neuro Kinetics IPAS
* Device: Oculogica EyeBox
* Device: SyncThink EyeSync Device


Participation Criteria
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Eligibility Criteria
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All participants must be DEERS eligible, no exceptions! Inclusion Criteria: Must be between 18 and 45 at time of screening (upper age restriction is to prevent confounding with age-related physiological changes). Must be able to provide written informed consent. Must be able to read and understand questionnaires and consent forms. Must have corrected binocular acuity of at least 20/40 for near distance with or without single-power corrective lenses or contacts and absent of ocular injury or disease. Control Group - No history of TBI or any history of severe or penetrating TBI TBI Group - Must have a documented history of a TBI occurring within the last 10 years. Exclusion Criteria: Current or previous neurological disease, including: stroke, congenital brain malformation, degenerative illness such as multiple sclerosis, epilepsy or seizure (other than febrile seizure). Current or previous ocular disease/injury, including: Glaucoma or increased pressure in the eyes, structural damage to ocular tract and ocular cortex, etc. History of vestibular disorder (e.g., with symptoms of clinical vertigo) Binocular vision not correctable to 20/40 for near distance Use of tobacco or caffeinated products less than four hours before test session Consumption of alcohol within past 24 hours

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: All participants undergo testing with the same three devices. The order of devices will be semi-randomized to eliminate order effects.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: TBI Group<br>Subjects with history of TBI will undergo testing with all three devices. | Device: Neuro Kinetics IPAS<br>* Testing with PAS device<br>Device: Oculogica EyeBox<br>* Testing with Oculogica EyeBox device<br>Device: SyncThink EyeSync Device<br>* Testing with SyncThink EyeSync device<br>|
| Other: Control Group<br>Subjects with no history of TBI will undergo testing with all three devices. | Device: Neuro Kinetics IPAS<br>* Testing with PAS device<br>Device: Oculogica EyeBox<br>* Testing with Oculogica EyeBox device<br>Device: SyncThink EyeSync Device<br>* Testing with SyncThink EyeSync device<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Area Under the Curve (AUC) | Determination of sensitivity/specificity measure for each device using known characteristics of arms (i.e., history of TBI vs no history of TBI) | Single test session (1.5 hours) - all testing performed at time of study enrollment, will be reported at conclusion of data collection as all data is required to generate AUCs. | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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oculomotor testing