NCT05657951

Repeatability and Reproducibility of Lens Zonule Length Measurement Using ArcScan Insight 100

Repeatability and Reproducibility of Lens Zonule Length Measurement Using ArcScan Insight 100 Very High-frequency Digital Ultrasound

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 45 (estimated)
• Sponsor: Wenzhou Medical University · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Accepted

Summary

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).

Conditions

• Zonule of Zinn Abnormality
• Zonular Cataract

Interventions

Type	Name	Description
DEVICE	ArcScan Insight 100 very high-frequency digital ultrasound	The Insight-100 (ArcScan Inc., Golden, CO, USA) employs the high-frequency B-scan in the assessment of anterior segment parameters. Anormal saline coupling medium is formed with a disposable eyepiece between the 50 MHz transducer and the eye. The instrument moves the transducer in an arc so that the beam axis maintains approximate normality to the surface of the eye. The frequencies of cornea, anterior chamber, and lens are 60 MHz, 50 MHz and 50 MHz, respectively. The maximum arc scanning range is 70 degrees, and there is a linear scanning range of 29mm. The axial and lateral resolutions are 35 μm and 65 μm, respectively. It can measure structures behind the iris, including lens zonule.

Timeline

• Start date: 2022-08-01
• Primary completion: 2022-10-01
• Completion: 2022-12-31
• First posted: 2022-12-20
• Last updated: 2022-12-20

Locations

1 site across 1 country: China