Visual Pathway DisorderNCT03741595
Visual Stimulus Competition
A study testing Item spacing in people with Visual Pathway Disorder, run by University of Houston at 1 site in United States.
Trial summary
In this study, we will use behavioral methods to investigate several types of interactions that occur when visual stimuli conflict, such as when objects are presented nearby to each other, or to separate eyes. We will target purely sensory aspects by using simple geometric shapes: letters and lines. Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Visual Pathway Disorder
- What is being tested?
- Item spacing
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 10 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Nov 2018to 1 Nov 2019
- Phase
- Interventional
- 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 Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- Normal Vision
- English language
Who cannot join
- Less than 20/20 in either eye
- Vision-affecting abnormalities (amblyopia, keratoconus, etc.)
- Ortho-K lenses
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Houston, College of Optometry
Houston, Texas, 77204
About this study
In this study, we will use behavioral methods to investigate several types of interactions that occur when visual stimuli conflict, such as when objects are presented nearby to each other, or to separate eyes. We will target purely sensory aspects by using simple geometric shapes: letters and lines. Our outcome measure will be performance thresholds.
Read the detailed description
Participants will be shown visual stimuli on displays and be asked to identify some aspect of the stimuli: their orientation and/or color, the existence of binocular suppression, etc.
In different blocks, stimuli will be manipulated in different ways to characterize basic aspects of visual processing. For example, the contrast, color, and/or spatial layout of stimuli will be varied.
- Conditions
- Visual Pathway Disorder
- Being tested
- Item spacing
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Item spacingBehavioural
Spatial proximity of items to one another
| Study group | Role | What they receive |
|---|---|---|
| Single Arm | Experimental | Not described Receives: Behavioral: Item spacing |
What is being measured
The primary outcome is the main question the study is designed to answer.
Detection probability
Ability to detect a target stimulus as a function of flanker proximity
Measured: 2 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Nov 2018
- Study start1 Nov 2018
- Primary completion1 Nov 2019 (estimated)
- Study completion1 Nov 2019 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Visual Pathway 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 10 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Houston
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Daniel R. Coates, University of Houston
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03741595
- Sponsor's protocol ID
- STUDY00001197
- Status last verified
- Nov 2018
- First submitted
- 12 Nov 2018
- Last updated
- 15 Nov 2018
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 15 Nov 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Visual Stimulus Competition
- ClinicalTrials.gov ID
- NCT03741595
- Acronym / sponsor ID
- STUDY00001197
- Conditions
- Visual Pathway Disorder
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 10 participants (estimated)
- Lead sponsor
- University of HoustonUniversity, hospital or other
- Study start
- 1 Nov 2018 (actual)
- Primary completion
- 1 Nov 2019 (estimated)
- Study completion
- 1 Nov 2019 (estimated)
- First posted
- 15 Nov 2018 (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.
In this study, we will use behavioral methods to investigate several types of interactions that occur when visual stimuli conflict, such as when objects are presented nearby to each other, or to separate eyes. We will target purely sensory aspects by using simple geometric shapes: letters and lines. Our outcome measure will be performance thresholds.
Detailed description
Participants will be shown visual stimuli on displays and be asked to identify some aspect of the stimuli: their orientation and/or color, the existence of binocular suppression, etc.
In different blocks, stimuli will be manipulated in different ways to characterize basic aspects of visual processing. For example, the contrast, color, and/or spatial layout of stimuli will be varied.
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Single Arm | Experimental | Behavioral: Item spacing |
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (2 listed)
- Normal Vision
- English language
Key exclusion criteria (3 listed)
- Less than 20/20 in either eye
- Vision-affecting abnormalities (amblyopia, keratoconus, etc.)
- Ortho-K lenses
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 |
|---|---|---|
| Item spacingSpatial proximity of items to one another | Behavioural | Single Arm |
Primary outcome
Detection probability
Time frame: 2 hours
Ability to detect a target stimulus as a function of flanker proximity
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Nov 2018.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Item spacing in people with Visual Pathway Disorder, run by University of Houston 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 2 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: status not confirmed, as of the sponsor's last update on 15 Nov 2018. 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?
Results are not available in the source record.
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?
Detection probability (time frame: 2 hours). 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 15 Nov 2018.