V-NAV Usability Study: End Users Trying the Vortant Indoor Navigation Tool

Not Applicable

Suspended

• Conditions: Blindness and Low Vision
• Interventions: Other: V-NAV indoor navigation prototype

• Registration Number: NCT05647694
• Lead Sponsor: Vortant Technologies, LLC

Brief Summary

The study will begin with an explanatory/training session where individuals with low vision will learn to use the V-NAV (Vortant NAVigation tool) indoor navigation app, and will have the opportunity to try it for a few representative tasks. The main activity includes a take-home trial, an extended unstructured period to emulate the post-purchase experience of users, during which participants will have the opportunity to use the V-NAV in their everyday lives. Data will be collected from the users to measure the relative advantage of V-NAV compared to the user's current indoor navigation method.

Detailed Description

The introductory session, emphasizing real-world experiences, will involve a brief training session followed by simulated navigation experiences in a convenient location to the users. Participants will use V-NAV to record approximately 8 locations, then will be given instructions to find these locations again. The V-NAV prototype's logging software will measure distance walked and task time. Participants will complete a study-specific tool covering the relevant attributes of the V-NAV prototype, as well as a standardized tool, the NASA TLX (Task Load Index).

Subsequently, participants will complete a take-home trial, during which they will be encouraged to use the V-NAV features regularly to support their everyday community navigation activities. Participants will be contacted approximately weekly with a "check-in" to answer questions and resolve any emergent technical problems. At the conclusion of the trial, a product-specific tool and an appropriate standardized tool, the PIADS (Psychosocial Impact of Assistive Devices Scale) will be administered.

Study Timeline

• Study First Submitted: 2022-11-29
• Study First Submitted QC: 2022-12-09
• Study First Posted: 2022-12-12
• Status Verified: 2024-11
• Last Update Submitted: 2024-11-21
• Last Update Posted: 2024-11-25
• Study Start: 2025-01-01
• Primary Completion: 2025-04-30
• Study Completion: 2025-04-30

Recruitment & Eligibility

• Status: SUSPENDED
• Sex: All
• Target Recruitment: 16

Inclusion Criteria

• AFB "visually impaired" definition, acuity 20/70 or worse or field loss of 140 degrees

Exclusion Criteria

• Any health condition that may affect safety of individual to participate
• Any physical, mental, or behavioral impairment that would provide more than minimal risk or hindering ability to comprehend the purpose of the device or otherwise to be a potential user of the V-NAV hardware or app.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
V-NAV users	V-NAV indoor navigation prototype	Users who try the V-NAV for navigation tasks.

Primary Outcome Measures

Name	Time	Method
V-NAV effectiveness	4 weeks	A measurement of user impressions as to the value of the V-NAV navigation aid. Use of e.g., PIADS survey.

Secondary Outcome Measures

Name	Time	Method
V-NAV usability	1 day	A measurement of how usable the V-NAV is. Use of e.g., NASA TLX survey.

Trial Locations

Locations (1)

Vortant Technologies; 🇺🇸 Weaverville, North Carolina, United States