Collision Warning Device for Blind and Visually Impaired

Completed · Not applicable

Conditions studied: Hemianopia, Hemianopsia, Peripheral Visual Field Defect, Blindness, Retinitis Pigmentosa, Glaucoma

In brief

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.

Key facts

Study ID

NCT03057496

Run by

Massachusetts Eye and Ear Infirmary

People needed

49

Starts

2018-01-22

Expected to finish

2019-12-05

Last updated by the study team

2021-02-10

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• 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;

You may not qualify if…

• 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

Where it is running

• Schepens Eye Research Institute — Boston, Massachusetts, United States

Full record on ClinicalTrials.gov

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