Vision Clinical Trial
Official title:
Visual Mechanisms of Intermediate Distance Space Perception During Self-motion
The ability to judge the locations of various objects from oneself during self-motion in the intermediate distance range (~2-25m) is crucial for successful performance of activities of daily living, such as walking and driving. However, little is known about the mechanisms of visual space perception involved in judging distance, the focus of this project, in the planning and/or execution of self-motion in the natural 3D environment. The theoretical knowledge to be gained from this project will contribute to the scientific literature and provide insights into how eye and neurological defects could impair visual space perception, wayfinding, and mobility.
Status | Recruiting |
Enrollment | 180 |
Est. completion date | June 30, 2025 |
Est. primary completion date | June 30, 2025 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years to 40 Years |
Eligibility | Inclusion Criteria: - Adults (up to 40 years of age) - Children (18 years and older) - Normal, or corrected-to-normal, visual acuity (at least 20/20) - Stereo acuity (<20 arc sec). Exclusion Criteria: - Self-reported history of visual and eye diseases - Physical movement restrictions. - Vulnerable populations such as pregnant women will be excluded owing to the extensive time commitment required of the subjects. |
Country | Name | City | State |
---|---|---|---|
United States | University of Louisville | Louisville | Kentucky |
Lead Sponsor | Collaborator |
---|---|
University of Louisville | National Eye Institute (NEI) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Visual mechanisms of intermediate distance space perception (distance) before and after self-motion | Subjects will judge perceived distances (cm) of test targets from themselves before self-motion to establish a baseline measure. Subjects will then undergo self-motion for an average of 10 sec, and stop at a predetermined location. Then subjects will again judge the perceived distance (cm) of test targets after the self-motion. The change in perceived distance (cm) from baseline will reveal if their perception is affected by environmental factors, internal perceptual process and/or cognitive process. | During procedure, an average of 10 sec. | |
Primary | Visual mechanisms of intermediate distance space perception (height) before and after self-motion. | Subjects will judge perceived heights (cm) of test targets relative to the floor or ceiling before self-motion to establish a baseline measure. Subjects will then undergo self-motion for an average of 10 sec, and stop at a predetermined location. Then subjects will again judge the perceived height (cm) of test targets after the self-motion. The change in perceived height (cm) from baseline will reveal if their perception is affected by environmental factors, internal perceptual process and/or cognitive process. | Druing procedure, an average of 10 sec. |
Status | Clinical Trial | Phase | |
---|---|---|---|
Completed |
NCT00713076 -
Wettability of Contact Lenses With a Multi-Purpose Solution
|
N/A | |
Completed |
NCT04065061 -
Erinacine A-enriched Hericium Erinaceus Mycelia for Improvement of Recognition, Vision, and Functional MRI Alterations
|
N/A | |
Withdrawn |
NCT00886249 -
Depth of Focus Comparison Between Acrysof IQ and Acrysof Natural IOLs
|
||
Completed |
NCT00591110 -
Project inCharge: Increasing the Rate of Comprehensive Eye Care Utilization by Older African Americans Through Community-Based Eye Health Education Program
|
N/A | |
Completed |
NCT02033200 -
Safety Study Looking at the Effects of Stendra on Vision
|
Phase 4 | |
Withdrawn |
NCT01062672 -
Functional Neuroimaging of Cortical Plasticity in the Human Visual System
|
||
Recruiting |
NCT03884985 -
Eye Movements, Visual Perception and Attention
|
N/A | |
Completed |
NCT01138228 -
Does the VTS1000 Infra Red Vein Imager Allow Better Identification of Veins Than Normal Eyesight?
|
N/A | |
Completed |
NCT01057966 -
Bioavailability of Nutrients Contained in Softgel Capsules vs Tablets
|
Phase 4 | |
Recruiting |
NCT00768586 -
Analysis of the Early Development of the Visual Function in Extreme Premature Infants Under 28th Weeks of Gestation
|
N/A | |
Completed |
NCT00357409 -
GABA Levels in the Brains of Blind People
|
N/A | |
Completed |
NCT05533658 -
The Effects of VisionPureâ„¢ on Indices of Vision Health and Cognitive Function
|
N/A | |
Recruiting |
NCT04332783 -
Isolating and Mitigating Sequentially Dependent Perceptual Errors in Clinical Visual Search
|
N/A |