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 range18 Years

SexALL

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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

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