V-NAV: Advanced Indoor Navigation Aid for Individuals With Visual Impairments, End User Evaluation
试验速览
- 阶段
- 不适用
- 状态
- 暂停
- 入组人数
- 16
- 试验地点
- 2
- 主要终点
- V-NAV effectiveness
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Other
- 盲法
- None
盲法说明
The use of the app will not be masked.
入排标准
- 年龄范围
- 12 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •AFB "visually impaired" definition, acuity 20/70 or worse or field loss of 140 degrees
排除标准
- •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.
结局指标
主要结局
V-NAV effectiveness
时间窗: 4 weeks
A measurement of user impressions as to the value of the V-NAV navigation aid. Use of e.g., PIADS survey.
次要结局
- V-NAV usability(1 day)