Repeatability and Reproducibility of Lens Zonule Length Measurement Using ArcScan Insight 100 Very High-frequency Digital Ultrasound
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 入组人数
- 45
- 试验地点
- 1
- 主要终点
- Repeatability of ArcScan Insight 100 zonule scans in normal eyes (standard deviation and coefficient of variation)
研究概览
简要总结
The purpose of this study is to evaluate the intra-examiner repeatability and inter-examiner reproducibility in lens zonule length measurements using very high-frequency (VHF) digital ultrasound (ArcScan Insight 100).
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Cross Sectional
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Subjects with no ocular disease except ametropia
- •Subjects will be able to understand and willing to sign an informed consent
排除标准
- •Previous ocular surgery
- •Subjects not being able to tolerate or not willing to use pilocarpine eye drops
- •Subjects has active ocular infection or inflammation
- •Subjects not being able to look steadily
- •Subjects not being able to open eyes wide in sterile saline even after topical anesthesia
结局指标
主要结局
Repeatability of ArcScan Insight 100 zonule scans in normal eyes (standard deviation and coefficient of variation)
时间窗: 1 day
First, three images will be obtained under'capsule model'using ArcScan Insight 100, and the length of zonule will be measured with built-in software by operator A. Operator B then performed the measurements using the same procedure and technique. The standard deviation and coefficient of variation of 3 repeated measurements for zonule length. will be calculated.
Reproducibility of ArcScan Insight 100 zonule scans in normal eyes
时间窗: 1 day
First, three images will be obtained under'capsule model'using ArcScan Insight 100, and the length of zonule will be measured with built-in software by operator A. Operator B then performed the measurements using the same procedure and technique. The intraclass correlation is used to evaluate the difference between operator A and operator B.
次要结局
- Repeatability of zonule length measurement with the built-in software (the intraclass correlation)(1 month)
研究者
Yune Zhao
Vice president
Wenzhou Medical University