Understanding Visual Confusion Using Stereoscopic Displays

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

View full results

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

13 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-11-09

Study Completion Date

2022-07-27

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

In this research study we want to test how people understand a visual scene when the same image is presented to both the eyes, but portions of these images are altered in terms of contrast, depth or in some cases motion.

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Effect of Visual Retraining on Visual Loss Following Visual Cortical Damage

NCT05098236

Vision Loss Partial Hemianopia Hemianopia Homonymous +2 more

COMPLETED NA

Visual Function Abnormalities in Strabismus and Amblyopia and Response to Therapy

NCT04310241

Amblyopia Strabismus

RECRUITING

Training to Modify Fixational Eye Movements for Optimizing Visual Performance in People With Central Vision Loss

NCT06670989

Central Vision Loss From Macular Diseases

ACTIVE_NOT_RECRUITING NA

Feasibility Tests for Various Prism Configurations for Visual Field Loss

NCT04424979

Hemianopia, Homonymous Tunnel Vision Visual Field Defect, Peripheral +2 more

RECRUITING NA

Improving Visual Field Deficits With Noninvasive Brain Stimulation

NCT05085210

Visual Field Defect, Peripheral Stroke Visual Impairment +6 more

RECRUITING NA

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Diplopia Binocular Vision Suppression Binocular; Fusion, With Defective Stereopsis Monocular Diplopia

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

NA

Intervention Model

SINGLE_GROUP

All participants in the group will see all three interventions (peripheral targets in three visual confusion conditions) in a randomized order. In this study design, each participant will serve as their own control, and the order of the interventions will be randomized to account for potential carryover or ordering effects. There will be no comparison or control group. The outcome will be compared through a within-subject analysis.

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Visual confusion

Participants viewed peripheral targets in three different visual confusion conditions (three interventions): binocular visual confusion (unilateral opaque target), unilateral monocular visual confusion (unilateral see-through target), and bilateral monocular visual confusion (bilateral see-through target). Each intervention was presented twice in a randomized order, resulting in a total of six trials. During each trial, a peripheral target was presented in front of a forward-moving background for one minute. Participants were instructed to hold down the controller button while the target was visible and release it when a third or more of the target disappeared. After each trial, participants could take a brief break before the next trial in a different visual confusion condition was presented in a randomized order.

Group Type EXPERIMENTAL

Binocular visual confusion (unilateral opaque)

Intervention Type BEHAVIORAL

The peripheral target was a horizontally drifting grating measuring 10° by 10°, with a spatial frequency of 1 cycle per degree and a temporal frequency of 3 Hz, and located at 10° above the fixation.

For the binocular visual confusion condition, the non-transparent (opaque) peripheral target will be displayed on only one eye (unilateral opaque display).

Unilateral monocular visual confusion (unilateral see-through)

Intervention Type BEHAVIORAL

The peripheral target was a horizontally drifting grating measuring 10° by 10°, with a spatial frequency of 1 cycle per degree and a temporal frequency of 3 Hz, and located at 10° above the fixation.

For the unilateral monocular visual confusion condition, the half-transparent peripheral target will be displayed on only one eye (unilateral see-through display).

Bilateral monocular visual confusion (bilateral see-through)

Intervention Type BEHAVIORAL

The peripheral target was a horizontally drifting grating measuring 10° by 10°, with a spatial frequency of 1 cycle per degree and a temporal frequency of 3 Hz, and located at 10° above the fixation.

For bilateral monocular visual confusion condition, the half-transparent peripheral target will be displayed on both eyes (bilateral see-through display).

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Binocular visual confusion (unilateral opaque)

The peripheral target was a horizontally drifting grating measuring 10° by 10°, with a spatial frequency of 1 cycle per degree and a temporal frequency of 3 Hz, and located at 10° above the fixation.

For the binocular visual confusion condition, the non-transparent (opaque) peripheral target will be displayed on only one eye (unilateral opaque display).

Intervention Type BEHAVIORAL

Unilateral monocular visual confusion (unilateral see-through)

The peripheral target was a horizontally drifting grating measuring 10° by 10°, with a spatial frequency of 1 cycle per degree and a temporal frequency of 3 Hz, and located at 10° above the fixation.

For the unilateral monocular visual confusion condition, the half-transparent peripheral target will be displayed on only one eye (unilateral see-through display).

Intervention Type BEHAVIORAL

Bilateral monocular visual confusion (bilateral see-through)

The peripheral target was a horizontally drifting grating measuring 10° by 10°, with a spatial frequency of 1 cycle per degree and a temporal frequency of 3 Hz, and located at 10° above the fixation.

For bilateral monocular visual confusion condition, the half-transparent peripheral target will be displayed on both eyes (bilateral see-through display).

Intervention Type BEHAVIORAL

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Better than 20/40 visual acuity in the worse eye
* No restrictions of the peripheral visual field: (at least 60 degrees vertically and 40 degrees horizontally)
* At least 14 years of age (no upper age limit)
* Able to give voluntary, informed consent
* Able to understand English
* Binocular vision parameters within normal limits (Stereopsis ≤ 100 arc sec on any stereo test)

Exclusion Criteria

* 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
* Being unable to complete sessions lasting 2-3 hours

Minimum Eligible Age

14 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes