Repeatability and Reproducibility of Lens Zonule Length Measurement Using ArcScan Insight 100
NCT ID: NCT05657951
Last Updated: 2022-12-20
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
45 participants
OBSERVATIONAL
2022-08-01
2022-12-31
Brief Summary
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Detailed Description
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Conditions
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Study Design
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CASE_ONLY
CROSS_SECTIONAL
Study Groups
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Normal eyes
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.
Interventions
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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.
Eligibility Criteria
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Inclusion Criteria
* Subjects will be able to understand and willing to sign an informed consent
Exclusion Criteria
* 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
ALL
Yes
Sponsors
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Wenzhou Medical University
OTHER
Responsible Party
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Yune Zhao
Vice president
Locations
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Eye Hospital of WMU
Hangzhou, Zhejiang, China
Countries
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References
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Li X, Chang P, Li Z, Qian S, Zhu Z, Wang Q, Yun-E Z. Agreement between anterior segment parameters obtained by a new ultrasound biomicroscopy and a swept-source fourier-domain anterior segment optical coherence tomography. Expert Rev Med Devices. 2020 Dec;17(12):1333-1340. doi: 10.1080/17434440.2020.1848541. Epub 2020 Dec 1.
Zhu Z, Zou H, Li H, Wu X, Wang Y, Li Z, Zhao Y. Repeatability and reproducibility of anterior lens zonule length measurement using ArcScan insight 100 very high-frequency ultrasound. Expert Rev Med Devices. 2023 Jul-Dec;20(8):703-710. doi: 10.1080/17434440.2023.2223967. Epub 2023 Jun 13.
Other Identifiers
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Insight100-zonule1
Identifier Type: -
Identifier Source: org_study_id