Post-Traumatic Stress DisorderVDMTBINCT00671450
Visual Dysfunction in Mild Traumatic Brain Injury (MTBI): A Comparison Group Study
An observational study of Post-Traumatic Stress Disorder, run by US Department of Veterans Affairs at 1 site in United States.
Trial summary
In an on-going study of visual characteristics of personnel diagnosed with a mild traumatic brain injury (MTBI) related to their service in Iraq and Afghanistan we found a high rate of binocular vision problems (such as double/blurry vision, reading difficult, etc.). Read more about this study
- Who is it for?
- Ages 19 to 39 years
- Conditions the study is for
- Post-Traumatic Stress Disorder
- How many people
- 75 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2008to Aug 2009
- Phase
- Observational
- Are there results?
- None posted in the registry
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 19 to 39 years
- All sexes
- No healthy volunteers
- Adult
Study population: Participants will be drawn from the patient population of the VAPAHCS PTSD Center and Clinics.
Who may be able to join
- diagnosis of PTSD
- no history of MTBI
- between 19 and 39 years of age
- a veteran
Who cannot join
- a history of MTBI
- over the age of 39
- an unwillingness to participate
Trial locations and contacts
1 site in 1 country.
United States1 site
VA Palo Alto Health Care System
Palo Alto, California, 94304-1290
About this study
Official title: Visual Dysfunction in MTBI: A Comparison Group Study
In an on-going study of visual characteristics of personnel diagnosed with a mild traumatic brain injury (MTBI) related to their service in Iraq and Afghanistan we found a high rate of binocular vision problems (such as double/blurry vision, reading difficult, etc.). These individuals are also usually diagnosed with post traumatic stress disorder (PTSD). PTSD is known to cause some vision symptoms. We wish to conduct this study on individuals with PTSD (but not an MTBI) to see if they have symptoms similar to those in individuals who have MTBI. This will provide us with information useful in determining the specific cause of the visual symptoms in the MTBI population.
Read the detailed description
We will recruit 75 patients diagnosed with PTSD, but with no history of mild traumatic brain injury (MTBI), from the population of the VAPAHCS PTSD Center and Clinics. These volunteers will be scheduled for an eye screening developed for a concurrent project to assess visual dysfunction (accommodation/vergence insufficiency, pursuit/saccade deficits, etc.) in patients diagnosed with MTBI and seen at the Palo Alto Polytrauma Network Site clinic. The MTBI patients have unexpectedly high rates of binocular dysfunction, although their visual acuities and visual fields are normal/near normal. The MTBI diagnosis is associated with a combat blast event in some 90% of cases. Th majority of this population has also been diagnosed with PTSD. PTSD is known to cause some visual symptoms, thus it is necessary for us to determine if the visual dysfunctions in the MTBI are related to their PTSD diagnosis or not. The volunteer participants will be scheduled for an eye screening and consented prior to the screening. Inclusion criteria include diagnosis of PTSD, aged 19 to 39, and willingness to participate. Exclusion criteria is primarily history of TBI. The visual screen includes assessments of visual acuity, visual field, self-reported visual function (i.e., light sensitivity, eye fatigue, reading difficulty), and measures of accommodative function, vergence, pursuit and saccades. The data collected will be compared to the data from the ongoing study of visual dysfunction in patients diagnosed with MTBI.
- Conditions
- Post-Traumatic Stress Disorder
- Medical subject headings
- Stress Disorders, Post-Traumatic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Group 1 | Participants will be patients diagnosed with PTSD but with no history of TBI. Participants must be between the ages of 19 and 39. Participants must be compentent to sign a consent form and be willing ot participate in a vision screening. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Presence or absence of binocular dysfunction
Measured: The primary outcome will be measured at a single visual screen lasting approximately one hour.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 May 2008 (estimated)
- Study startOct 2008
- Primary completionJul 2009
- Study completionAug 2009
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Post-Traumatic Stress DisorderStudies of the same condition, open and under way.
- 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
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 75 participants (estimated)
Sponsor and investigators
- Lead sponsor
- US Department of Veterans Affairs
- Sponsor type
- US federal agency
- Responsible party
- Sponsor
- Investigators
- Gregory L Goodrich, PhD, Principal investigator, VA Palo Alto Health Care System
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00671450
- Sponsor's protocol ID
- SHP 08-142
- Acronym
- VDMTBI
- Status last verified
- Aug 2009
- First submitted
- 30 Apr 2008
- Last updated
- 28 Jan 2013
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 28 Jan 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Visual Dysfunction in MTBI: A Comparison Group Study
- ClinicalTrials.gov ID
- NCT00671450
- Acronym / sponsor ID
- VDMTBI / SHP 08-142
- Conditions
- Post-Traumatic Stress Disorder
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 75 participants (estimated)
- Lead sponsor
- US Department of Veterans AffairsUS federal agency
- Study start
- Oct 2008
- Primary completion
- Jul 2009 (actual)
- Study completion
- Aug 2009 (actual)
- First posted
- 5 May 2008 (estimated)
- 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.
In an on-going study of visual characteristics of personnel diagnosed with a mild traumatic brain injury (MTBI) related to their service in Iraq and Afghanistan we found a high rate of binocular vision problems (such as double/blurry vision, reading difficult, etc.). These individuals are also usually diagnosed with post traumatic stress disorder (PTSD). PTSD is known to cause some vision symptoms. We wish to conduct this study on individuals with PTSD (but not an MTBI) to see if they have symptoms similar to those in individuals who have MTBI. This will provide us with information useful in determining the specific cause of the visual symptoms in the MTBI population.
Detailed description
We will recruit 75 patients diagnosed with PTSD, but with no history of mild traumatic brain injury (MTBI), from the population of the VAPAHCS PTSD Center and Clinics. These volunteers will be scheduled for an eye screening developed for a concurrent project to assess visual dysfunction (accommodation/vergence insufficiency, pursuit/saccade deficits, etc.) in patients diagnosed with MTBI and seen at the Palo Alto Polytrauma Network Site clinic. The MTBI patients have unexpectedly high rates of binocular dysfunction, although their visual acuities and visual fields are normal/near normal. The MTBI diagnosis is associated with a combat blast event in some 90% of cases. Th majority of this population has also been diagnosed with PTSD. PTSD is known to cause some visual symptoms, thus it is necessary for us to determine if the visual dysfunctions in the MTBI are related to their PTSD diagnosis or not. The volunteer participants will be scheduled for an eye screening and consented prior to the screening. Inclusion criteria include diagnosis of PTSD, aged 19 to 39, and willingness to participate. Exclusion criteria is primarily history of TBI. The visual screen includes assessments of visual acuity, visual field, self-reported visual function (i.e., light sensitivity, eye fatigue, reading difficulty), and measures of accommodative function, vergence, pursuit and saccades. The data collected will be compared to the data from the ongoing study of visual dysfunction in patients diagnosed with MTBI.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Group 1 | – | –Participants will be patients diagnosed with PTSD but with no history of TBI. Participants must be between the ages of 19 and 39. Participants must be compentent to sign a consent form and be willing ot participate in a vision screening. |
Who may qualify
- Ages
- 19 to 39 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- Participants will be drawn from the patient population of the VAPAHCS PTSD Center and Clinics.
Key inclusion criteria (4 listed)
- diagnosis of PTSD
- no history of MTBI
- between 19 and 39 years of age
- a veteran
Key exclusion criteria (3 listed)
- a history of MTBI
- over the age of 39
- an unwillingness to participate
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Presence or absence of binocular dysfunction
Time frame: The primary outcome will be measured at a single visual screen lasting approximately one hour.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Jan 2013.
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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. This study is not recruiting at the moment.
Gregory L Goodrich, PhD principal investigator
VA Palo Alto Health Care System
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Post-Traumatic Stress Disorder, run by US Department of Veterans Affairs at 1 site 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 4 inclusion and 3 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: finished, as of the sponsor's last update on 28 Jan 2013. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Presence or absence of binocular dysfunction (time frame: The primary outcome will be measured at a single visual screen lasting approximately one hour.). 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 28 Jan 2013.