Vision Loss Impact on Navigation in Virtual Reality (NCT06047717) | Clinical Trial Compass
RecruitingNot Applicable
Vision Loss Impact on Navigation in Virtual Reality
United States40 participantsStarted 2023-11-28
Plain-language summary
The purpose of this research is to better understand the impact of cortically-induced blindness (CB) and the compensatory strategies subjects with this condition may develop on naturalistic behaviors, specifically, driving. Using a novel Virtual Reality (VR) program, the researchers will gather data on steering behavior in a variety of simulated naturalistic environments. Through the combined use of computer vision, deep learning, and gaze-contingent manipulations of the visual field, this work will test the central hypothesis that changes to visually guided steering behaviors in CB are a consequence of changes to the visual sampling and processing of task-related motion information (i.e., optic flow).
Who can participate
Age range
21 Years – 75 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Cortically Blind Group:
Inclusion Criteria:
* Residents of the United States or Canada
* Presence of one-sided stroke or stroke-like damage to primary visual cortex or its immediate afferent white matter sustained within the specified age range of 21 - 75 years (verified by MRI and/or CT scans)
* Reliable visual field defects in both eyes (homonymous defects) as measured by Humphrey or equivalent perimetry.
* Willing, able, and competent to provide their own informed consent
* Cognitively able, responsible to understand written and oral instructions in English
* Emmetropic or else wear corrective contact lenses inside the virtual reality headset
Exclusion Criteria:
* Those who have never driven or earned a drivers' license
* Past or present ocular disease interfering with visual acuity
* Best corrected visual acuity (BCVA) worse than 20/40 in either eye
* Sustained damage to the dorsal lateral geniculate nucleus
* Presence of diffuse, whole-brain degenerative processes
* Presence of brain damage deemed by study staff to potentially interfere with outcome measures
* History of traumatic brain injury
* Documented history of drug/alcohol abuse
* Diagnosis of cognitive or seizure disorders
* Diagnosis of one-sided attentional neglect
Control Group:
Inclusion Criteria:
* Normal or corrected-to-normal vision, who are between the ages of 21 and 75 years of age, roughly matched to the age of CB subjects enrolled above
* Competent and responsible, as determined by the Principal…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.