Simulated Walking With Multiplexing Prism for Field Expansion in Monocular Vision
Study Details
Study Description
Brief Summary
The investigators are developing an assistive device, known as multiplexing prism that expands the field of view for individuals with acquired monocular vision (loss of an eye). The investigators will test the efficacy of the prism in improving the detection of colliding pedestrians during a simulated walking task.
Condition or Disease | Intervention/Treatment | Phase |
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N/A |
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Experimental: Detection of colliding pedestrian Participants will perform a simulated walking task in which surrounding pedestrians will walk towards and make a collision. Participants will respond by pressing buttons to indicate the direction of the colliding pedestrians. Participants will perform the task with and without the multiplexing prism in random orders. |
Device: Multiplexing Prism
Multiplexing prism is designed for spatial vision multiplexing. It allows partial light transmission through the prism allow the observer to simultaneously see the physical world through the prism and see the "shifted view" from the non-seeing side. It is developed to expand the field of view of individuals with just one eye.
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Outcome Measures
Primary Outcome Measures
- Mean response time to detect colliding pedestrian [Approximately 3 sessions, up to 3 hours for each session, any time within 4 month period]
The investigators will compare the mean response time to detect colliding pedestrians coming from the nasal (same side as the blind eye) and temporal (same side as the seeing eye) visual field with and without multiplexing prism. The comparison will be made between these four: Nasal without prism, Temporal without prism, Nasal with prism, and Temporal with prism.
Secondary Outcome Measures
- Pedestrian Detection Rate [Approximately 3 sessions, up to 3 hours for each session, any time within 4 month period]
The investigators will measure the rate of correct detection rate of colliding pedestrians in the nasal (same side as the blind eye) and temporal (same side as the seeing eye) with and without multiplexing prism. Comparisons will be made for these: nasal without prism, temporal without prism, nasal with prism,and temporal with prism.
Eligibility Criteria
Criteria
Inclusion Criteria:
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No medical health issues such as seizures, motor movements problem
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Loss of vision in one eye (no light perception/enucleation/evisceration) for >1 year
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Visual acuity of the seeing eye: Better than 20/32 visual acuity with correction
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No visual field defect in the seeing eye (nasal field of at least >45degree)
Exclusion Criteria:
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Patients with any physical or mental disabilities, including cognitive dysfunction, balance problems, or other deficits that could impair their ability to respond to the stimuli presented in this study will be excluded
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Any person with a history (such as pacemaker use or photosensitive epilepsy)
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Any person with motor movements problem (e.g., unable to use extremities)
Contacts and Locations
Locations
No locations specified.Sponsors and Collaborators
- Massachusetts Eye and Ear Infirmary
- National Eye Institute (NEI)
Investigators
- Principal Investigator: Jaehyun Jung, PhD, Schepens Eye Research Institute
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- 2023P001885
- R01EY031777