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New prism device may help one-eyed pedestrians avoid collisions

NCT ID NCT06024668

Symptom relief Sponsor: Massachusetts Eye and Ear Infirmary Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled This study
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jul 10, 2026 · Updated 2 times

Summary

This study tested a prism device designed to expand the field of view for people who have lost vision in one eye. The goal was to see if the prism helps them detect pedestrians approaching from their blind side during a simulated walking task. Only one person participated before the study was stopped.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Started

Aug 2024

Finished

Jan 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

16 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * No medical health issues such as seizures, motor movements problem * Loss of vision in one eye (less than 20/200) for \>1 year * Visual acuity of the seeing eye: Better than 20/32 visual acuity with correction * No visual field defect in the seeing eye (nasal field of at least \>45degree) 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 * Any person with a history (such as pacemaker use or photosensitive epilepsy) * Any person with motor movements problem (e.g., unable to use extremities)

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Conditions

The condition(s) this trial relates to.

amaurosis fugax blindness (disorder)

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Blind left eye Blind right eye One eye blindness

Contacts and locations

Locations

  • Schepens Eye Research Institute

    Boston, Massachusetts, 02114, United States