Assessment of the Validity, Reliability, and Feasibility of Two Smartphone Applications for Testing the Visual Acuity
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 120
- 试验地点
- 1
- 主要终点
- Distance visual acuity assessment with Easy Vision versus Peek Acuity versus conventional distance visual acuity chart
研究概览
简要总结
Visual acuity (VA) is the most common measure of visual function globally. In clinical settings and during screening events, VA is an important measure to quantify changes in vision over time. Additionally, in the context of epidemiological studies and population-based surveys, VA is a critical measure to determine the presence and degree of vision impairment and to report on the indicators of effective eye care service coverage (i.e. refractive error and cataract surgery), that are currently considered by World Health Organization (WHO) for monitoring progress towards the Universal Health Coverage.
There are numerous applications for assessing VA; however, the number of validated applications is limited. In this study, the investigators aim to evaluate the external validity, intra- and inter-observer reliability, and feasibility of two applications ("Easy Vision" and "Peek Acuity") for testing the visual acuity.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Health Services Research
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 10 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Age ≥10 years old
排除标准
- •Subjects who are not able to respond to the examiner
研究组 & 干预措施
Visual acuity assessment using "Test Yourself module" of "Easy Vision" application
干预措施: Assessment of distance and near visual acuity using "Test Yourself module" of "Easy Vision" application (Device)
Visual acuity assessment using "Peek Acuity" application
干预措施: Assessment of distance and near visual acuity using "Peek Acuity" application (Device)
Visual acuity assessment using the conventional methods
干预措施: Assessment of distance and near visual acuity using the conventional methods (Other)
Visual acuity assessment using "Vision Screening module" of "Easy Vision" application
干预措施: Assessment of distance and near visual acuity using "Vision Screening module" of "Easy Vision" application (Device)
结局指标
主要结局
Distance visual acuity assessment with Easy Vision versus Peek Acuity versus conventional distance visual acuity chart
时间窗: Through study completion [an average of 6 months]
To assess the agreement between two smartphone-based evaluation of distance visual acuity (LogMAR unit) with Easy Vision and Peek Acuity and a conventional distance visual acuity chart (Tumbling E optotype)
Near visual acuity assessment with Easy Vision versus Peek Acuity versus conventional near visual acuity chart
时间窗: Through study completion [an average of 6 months]
To assess the agreement between two smartphone-based evaluation of near visual acuity (LogMAR unit) with Easy Vision and Peek Acuity and a conventional near visual acuity chart (Handheld chart: Tumbling E Near Point Vision Chart)
次要结局
未报告次要终点
研究者
Zahra Rabbani Khah
Head of Ophthalmic Research Center
Shahid Beheshti University of Medical Sciences