- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02771106
Neuroimaging and Neurovision Rehabilitation of Oculomotor Dysfunction in Mild Traumatic Brain Injury
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The primary objectives are: 1) To localize changes following mild traumatic brain injury (mTBI) in subjects with vision dysfunction using functional magnetic resonance imaging (fMRI) and diffusion tensor imaging (DTI). 2) To demonstrate the effectiveness of neuro vision rehabilitation (NVR) on vision dysfunction initiated within nine months following mTBI by normalizing objective visual measurements as well as changes on fMRI and DTI.
Mild (TBI) comprises 80% of the 3.65 million brain injuries in the United States and costs an estimated 17 billion dollars annually. Mild TBI is a challenging diagnosis and can be as disabling as a severe TBI when chronic symptoms develop. In the past several years, researchers have found that a somewhat silent majority of mTBI patients who develop lasting symptoms have concurrent vision dysfunction. This cohort of patients with post-traumatic visual difficulty, regardless of mechanism of injury, seem to demonstrate more significant and lasting disability and poorer overall outcome than other TBI cohorts, yet these correlations have not been adequately studied. The studies that have been performed have found that visual dysfunctions may not spontaneously improve and become chronic in absence of direct diagnosis and treatment. Time after injury has been shown in studies to have no influence on incidence or frequency of visual difficulties but once identified, these pervasive visual dysfunctions significantly improve in response to interventions such as prescription glasses and NVR.
For the past 16 months, the Center for Magnetic Resonance Research (CMRR) at the University of Minnesota (U of M) and the TBI Center at the Hennepin County Medical Center (HCMC) have closely collaborated in a pilot study. The goal of this study was to identify the location in the brain of post traumatic visual changes in acute mTBI subjects (< 9 months from injury date, ages 18-55) using resting state and task fMRI and DTI. Mild TBI subjects who had vision dysfunction (vision group) were compared to mTBI subjects who did not have any vision difficulties (controls). Task fMRI imaging demonstrated significant decreased brain activity in the vision dysfunction subjects as compared to the controls in certain key vision areas. Diffusion tensor imaging showed significant changes in certain areas of the corpus callosum.
This trial is designed as a longitudinal clinical study. Fifteen mTBI patients with vision dysfunction (vision group) fitting the inclusion/exclusion criteria and 15 patients with mTBI but with no findings on the visual screen (control group) within 9 months of their injury will be included in the study. No subject will be excluded on the basis of sex/gender, race or ethnicity. These mTBI subjects will initially be identified by physicians in the HCMC TBI Clinic. If agreeable, consent will be obtained at both HCMC as well as prior to their baseline MRI scans at CMRR. The subjects will then undergo objective testing by a specialized eye doctor at HCMC to confirm if they do or do not have vision dysfunction related to the mTBI. At CMRR, within 2 weeks of the visual testing, the whole brain will be imaged using resting state and task fMRI and DTI using a 3T MRI machine. The subjects will then receive neurovision rehabilitation for approximately 3 months at HCMC if they are in the vision group. This treatment is standard care for this population. Both groups will then undergo repeat objective vision testing by the specialized eye doctor at 3 and 6 months to confirm that vision dysfunction has resolved. Resting state and task fMRI and DTI will be done at the same time to compare functional and structural connectivity changes between the 2 groups.
Mild TBI is a significant cause of disability especially when symptoms become chronic. In HCMC's clinical experience, this chronicity is often linked to vision difficulties. Vision dysfunction will continue until properly identified and treated, especially with neuro vision rehabilitation. The goals of this research study are to better understand cerebral structural and metabolic changes associated with as well as the effectiveness of neuro vision rehabilitation on post traumatic vision dysfunction by utilizing resting state and task fMRI and DTI. A positive outcome will have a significant impact on the diagnosis and care of the considerable numbers of mTBI patients suffering from vision dysfunction, especially because neurovision rehabilitation will be more utilized by the medical community. In turn, the overall functional outcomes after mTBI will improve, greatly relieving the suffering and disability for these patients.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Minnesota
-
Minneapolis, Minnesota, United States, 55415
- Hennepin County Medical Cetner
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Mild TBI (GCS score > 13), Post Traumatic Amnesia < 24 hours, no brain CT findings
- Diagnosed with vision dysfunction by developmental optometrist
- Age equal to or > 16 years- 55 years.
- Injury between 1 - 9 months
- Informed consent obtained
Exclusion Criteria:
- Any type of bio-implant activated by mechanical, electronic, or magnetic means
- Any type of ferromagnetic bio-implant that could potentially be displaced
- Pregnant females
- Significant anxiety and/or claustrophobia
- Subjects who cannot adhere to the experimental protocol
- Brain tumor or stroke or severe traumatic brain injury or history of severe mental retardation
- Any chemotherapy, immunomodulatory agents, or radiation treatment affecting the brain
- Two or more seizures, or been given a diagnosis of epilepsy
- Known ocular problems including orbital fractures, monocular vision, strabismus, - Lasik surgery for monofixation, cataracts with visual acuity > 20/40
- History of intractable migraines
- History of major psychiatric disorder
- Taking medications which interfere with visual process
- Taking illicit drugs such as marijuana, cocaine, heroin, etc
- Age < 16 and > 55 years
- GCS score < 13
- Current TBI or still symptomatic from prior mTBI > 9 months
- Any vision rehabilitation
- Near point convergence > 70 cm or sustained diplopia
- Cranial nerve II, III, IV, or VI palsy
- Any findings on clinical brain CT or MRI
- Any subject with a professional or academic link to the PI
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
vision dysfunction
This group are subjects with mild TBI who have been diagnosed with profound oculomotor (vision) dysfunction per objective measurements taken by the HCMC developmental optometrist.
These subjects will undergo neuro vision rehabilitation.
|
Neuro vision rehabilitation used to treat vision dysfunction following TBI
|
control
This group are subjects with mild TBI who have no oculomotor (vision) dysfunction per objective measurements taken by the HCMC developmental optometrist
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
To localize changes following mild traumatic brain injury in subjects with vision dysfunction using magnetic resonance imaging (MRI).
Time Frame: 18 months
|
18 months
|
2) The effectiveness of neuro vision rehabilitation on vision dysfunction initiated within nine months following mTBI will be shown using magnetic resonance imaging by comparing aggregate data of 15 vision dysfunction subjects to 15 control subjects.
Time Frame: 18 months
|
18 months
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Sarah B Rockswold, MD, Minneapols Medical Research Foundation
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- HSR #13-3702
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Traumatic Brain Injury
-
Fondazione per la Ricerca Ospedale MaggioreCompletedBrain Injuries, Traumatic | Brain Injury Traumatic Severe | Brain Injury Traumatic ModerateItaly
-
Toronto Rehabilitation InstituteCentre for Aging and Brain Health Innovation; Ontario Neurotrauma FoundationUnknownBrain Injuries, Traumatic | Brain Injury, Chronic | Brain Injury Traumatic Severe | Brain Injury Traumatic ModerateCanada
-
Hospital Sirio-LibanesUniversity of Sao Paulo; Ministry of Health, Brazil; Hospital Sao Rafael; PROAD... and other collaboratorsRecruitingBrain Injury Traumatic Severe | Brain Injury Traumatic Moderate | Post Traumatic EpilepsyBrazil
-
University of TurkuTurku University Hospital; The Finnish Funding Agency for Technology and Innovation... and other collaboratorsCompletedBrain Injuries | TBI (Traumatic Brain Injury) | Brain Injuries, Traumatic | Traumatic Brain Injury | Injury, Brain, TraumaticFinland
-
Children's Hospital Medical Center, CincinnatiUniversity of CincinnatiCompletedBrain Injury Traumatic MildUnited States
-
Institut National de la Santé Et de la Recherche...Institut National de Recherche en Informatique et en AutomatiqueNot yet recruitingTBI (Traumatic Brain Injury)France
-
BrainScope Company, Inc.RecruitingTBI (Traumatic Brain Injury) | Concussion, Brain | MTBI - Mild Traumatic Brain Injury | Closed Head InjuryUnited States
-
University of Sao Paulo General HospitalUnknownTraumatic Brain Injury | Severe Brain Injury | Closed Traumatic Brain InjuryBrazil
-
Queen Mary University of LondonCompleted
-
Northeastern UniversityBrandeis UniversityRecruitingTraumatic Brain Injury | Mild Traumatic Brain Injury | TBI | Moderate Traumatic Brain InjuryUnited States
Clinical Trials on neuro vision rehabilitation
-
University Hospital, Gentofte, CopenhagenCopenhagen University Hospital at Herlev; The Institute for the Blind and Partially...RecruitingBrain Injuries | Traumatic Brain Injury | Stroke, Ischemic | Stroke HemorrhagicDenmark
-
VA Office of Research and DevelopmentCompletedCentral Vision Loss From Macular DiseasesUnited States
-
University of California, Los AngelesUniversity of Nebraska; Southern California College of Optometry at Marshall... and other collaboratorsRecruitingLow Vision | Low Vision AidsUnited States
-
University of California, Los AngelesNational Eye Institute (NEI); New England College of Optometry; American Academy... and other collaboratorsRecruiting
-
New England College of OptometryUniversity of California, Los Angeles; National Institute on Disability, Independent...Completed
-
Vastra Gotaland RegionAlingsas hospital emergincy section; Narhalsan primary care rehabilitation; Narhalsan...UnknownTraumatic Brain Injury | Concussion, BrainSweden
-
Johns Hopkins UniversityCompletedNeovascular Age-related Macular Degeneration | Low VisionUnited States
-
Riphah International UniversityCompleted
-
Lawson Health Research InstituteUnknownLow Vision Aids | Low Vision, One Eye, Unspecified Eye | Low Vision BlindnessCanada
-
Haukeland University HospitalHelse Stavanger HF; St. Olavs Hospital; Stavanger Municipality; Statped VestUnknown