CompletedNot Applicable

Collision Warning Device for Blind and Visually Impaired

United States49 participantsStarted 2018-01-22

Plain-language summary

This study evaluates a novel collision warning device to help people with severe vision impairment or blindness avoid collisions with obstacles. The main hypothesis to be tested is that the device reduces the number of collisions with obstacles in everyday activities.

Who can participate

Age range

18 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.

Inclusion Criteria: * Blindness (or very limited vision with visual acuity no better than "counting fingers"), * Or severe peripheral field loss / tunnel vision (≤ 40° remaining visual field) with visual acuity of at least 20/200, * Or homonymous hemianopia with visual acuity of at least 20/200; * Able to walk independently either with or without mobility aids such as a long cane or guide dog (but without the aid of a sighted guide); * Reports at least minor bumps or collisions within the last 3 months; Exclusion Criteria: * Currently participating in a mobility training program * Diagnosed dementia * Significant cognitive decline * Participants with hemianopia will be excluded if they have hemianopia for less than 3 months and/or have spatial neglect

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.

What they're measuring

Number of Collision Incidents (All Contacts)

Timeframe: During the one-month period of device use

Trial details

NCT IDNCT03057496

SponsorMassachusetts Eye and Ear Infirmary

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2019-11-08

Results submitted2020-10-30

View on ClinicalTrials.gov More Hemianopia trials

Who can participate

Age range

18 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.