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Vision Training for Low Vision (FLAP Trial)
N/A
Recruiting
Research Sponsored by University of Alabama at Birmingham
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial Must have
Aged 18-30
No reported incidence of retinal pathology.
Must not have
Maximum body girth over 60 inches
Being hearing-impaired
Timeline
Screening 3 weeks
Treatment Varies
Follow Up baseline and within 3 weeks of training completion, training is complete 7 weeks from baseline on average
Awards & highlights
No Placebo-Only Group
Summary
This trial looks at how different types of training and therapy can help people with low vision. The findings could help millions of people who suffer from this condition.
Who is the study for?
This trial is for individuals aged 18-30 with corrected vision of 20/40 or better and no retinal pathology. It's not suitable for those needing special glasses, over certain body size limits, pregnant, with pacemakers/metal implants (except some dental work), weighing over 300 pounds, claustrophobic, hearing-impaired, with extensive tattoos near the head, a history of serious head injury or hallucinations/delusions.
What is being tested?
The study tests four training conditions to improve visual function in people with low vision: training visual sensitivity; spatial attention; spatial integration; and a combination of these methods. The goal is to understand how the brain adapts after central vision loss and develop new treatments.
What are the potential side effects?
Since this trial involves non-invasive training exercises rather than medication or surgery, traditional side effects are not expected. However, participants may experience eye strain or fatigue from the visual tasks.
Eligibility Criteria
Inclusion Criteria
You may be eligible if you check “Yes” for the criteria belowSelect...
I am between 18 and 30 years old.
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I have no history of eye diseases affecting the retina.
Exclusion Criteria
You may be eligible for the trial if you check “No” for criteria below:Select...
My body's widest part measures over 60 inches.
Select...
I am hearing-impaired.
Select...
I experience hallucinations or delusions.
Timeline
Screening ~ 3 weeks3 visits
Treatment ~ Varies
Follow Up ~ baseline and within 3 weeks of training completion, training is complete 7 weeks from baseline on average
Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~baseline and within 3 weeks of training completion, training is complete 7 weeks from baseline on average
Treatment Details
Study Objectives
Study objectives can provide a clearer picture of what you can expect from a treatment.Primary study objectives
Change from Baseline Fixation Stability after Completion of Training at approximately 7 weeks
Change from Baseline Radial Bias from the Crowding Task after completion of Training at approximately 7 weeks
Change from Baseline Saccadic Precision after Completion of Training at approximately 7 weeks
Other study objectives
Change from Baseline Acuity after Completion of Training at approximately 7 weeks
Change from Baseline Completion time in the trail making task after Completion of Training at approximately 7 weeks
Change from Baseline Contrast Sensitivity after Completion of Training at approximately 7 weeks
+15 moreAwards & Highlights
No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.
Trial Design
4Treatment groups
Experimental Treatment
Group I: Condition 4: Combination trainingExperimental Treatment1 Intervention
In Condition 4, investigators combine the elements of Conditions 1-3. The investigators test the extent to which a combined training gives rise to the joint benefits of each training individually, or integrative benefits potentially surpass the benefits of the individual training alone. The visual sensitivity task from Condition 1 will alternate across blocks with the spatial integration task from Condition 2, using the timing of targets and location switches from Condition 3; Gabors or contours are used as targets instead of the red- circle in Condition 3 and a fixation point is presented instead of distractors to maintain a similar stimulus configuration as Conditions 1 and 2.
Group II: Condition 3: Training spatial attentionExperimental Treatment1 Intervention
A key attribute of most real-world visual tasks is that individuals alternate shifting and holding attention and eye movements to different objects in the visual field while searching for and discriminating possible sources of visual information. To train this, investigators will implement a task structure that requires participants to alternate between holding and switching attention and making targeted eye movements. The basic task is to press a key whenever a red circle appears in a series of other colored circles, with a target presented every 2 to 4s. Participants must maintain vigilance for relatively long periods, detect objects in the near periphery, switch attention based upon exogenous and endogenous cues, and make eye- movements to move areas of spared vision to those locations. These are aspects of attention and eye movements not incorporated in Conditions 1 and 2.
Group III: Condition 2: Training spatial integrationExperimental Treatment1 Intervention
Most visual tasks involve integrating features to discriminate objects, therefore requiring brain areas that can integrate features from multiple receptive fields from early visual areas. Thus spatial integration involves what investigators refer to as mid-level vision. Spatial integration is a particular concern in developing a PRL since an area of the visual periphery that is best suited to discriminate a simple visual feature may not be appropriate to integrate information across objects, such as in reading or recognizing facial identity or expression. Investigators address this issue with a targeted spatial integration training approach developed by MPI Seitz and based on contour integration tasks used in previous PL studies to train mid-level visual processes. Target stimuli consist of contours formed by spaced Gabors. Difficulty of detecting the target is manipulated by varying orientation jitter of Gabors making up the target.
Group IV: Condition 1: Training visual sensitivityExperimental Treatment1 Intervention
A standard Perceptual Learning approach to train early visual processes of discriminating the orientation of Gabor patches presented at threshold- level contrast. Preliminary data, using this method, in normally seeing and MD participants show both feasibility and preliminary evidence that this training gives rise to improvements in acuity.
Find a Location
Who is running the clinical trial?
University of Alabama at BirminghamLead Sponsor
1,646 Previous Clinical Trials
2,342,264 Total Patients Enrolled
University of California, RiversideOTHER
30 Previous Clinical Trials
12,879 Total Patients Enrolled
Media Library
Eligibility Criteria:
This trial includes the following eligibility criteria:- I am between 18 and 30 years old.You weigh more than 300 pounds.You have very old or bright tattoos, especially near your head.I am hearing-impaired.You are afraid of being in small, enclosed spaces.You have braces or a permanent retainer.You have a pacemaker or any metal in your body that can be affected by a magnetic field.My body's widest part measures over 60 inches.I experience hallucinations or delusions.You require special glasses for clear distance vision, except for the simple MR-compatible glasses that can be provided.You have had a severe head injury in the past.You have good vision (20/40 or better).I have no history of eye diseases affecting the retina.
Research Study Groups:
This trial has the following groups:- Group 1: Condition 2: Training spatial integration
- Group 2: Condition 3: Training spatial attention
- Group 3: Condition 1: Training visual sensitivity
- Group 4: Condition 4: Combination training
Awards:
This trial has 1 awards, including:- No Placebo-Only Group - All patients enrolled in this study will receive some form of active treatment.
Timeline:
This trial has the following timeline:- Screening: It may take up to 3 Weeks to process to see if you qualify in this trial.
- Treatment: The duration you will receive the treatment varies.
- Follow Ups: You may be asked to continue sharing information regarding the trial for 6 Months after you stop receiving the treatment.
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