In-vivo Lens Biometry Using the Novel Ultrasound Biomicroscopy.

Xiaoting Ruan,Xuhua Tan,Chen Liang,Lixia Luo,Guangming Jin,Ling Jin,Zhaoxia Xia,Zhenzhen Liu

doi:10.3389/fmed.2022.777645

Xiaoting Ruan, Xuhua Tan + Show 6 more

Open Access

https://doi.org/10.3389/fmed.2022.777645

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Abstract

Background and AimTo assess the reproducibility of the novel ultrasound biomicroscopy, Insight 100 and its agreement with a swept-source optical coherence tomography, CASIA2.MethodsA total of 96 volunteers (96 eyes) were enrolled. The radius of anterior lens curvature (RAL), the radius of posterior lens curvature (RPL), lens thickness (LT), and lens diameter (LD) were measured with Insight 100 and CASIA2. A semiautomated software was used to adjust the measurement of LT (LTS) and LD (LDS) by Insight 100. Intraobserver and interobserver reproducibility of Insight 100 measurements, and the agreement of results from Insight 100 and CASIA2 were assessed with 95% limit of agreement (LoA), intraclass correlation coefficient (ICC), Pearson correlation, and linear regression.ResultsFor Insight 100 measurements, the intraobserver ICCs of RAL, RPL, LTS, and LDS measurement were 0.996, 0.973, 0.936, and 0.889, and the interobserver ICCs were 0.987, 0.890, 0.974, and 0.816, respectively. There was an excellent correlation in LT measurements (R = 0.961, P < 0.001) but poor agreements in other parameters between the two devices. The LD measurements tended to be larger (95% CI: 0.768–0.928) in CASIA2 when compared with Insight 100.ConclusionInsight 100 could obtain highly repeatable lens biometry in vivo. With better signal penetration, it shows promising potential in future clinical applications.

Highlights

The measurement of lens parameters is of great importance in both research of lens function, and calculation of the intraocular lens (IOL) power [1–5]
Intraobserver and interobserver reproducibility of Insight 100 measurements, and the agreement of results from Insight 100 and CASIA2 were assessed with 95% limit of agreement (LoA), intraclass correlation coefficient (ICC), Pearson correlation, and linear regression
The commercially available devices providing in vivo lens parameters measurement include the Scheimpflug photography, anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM) [6–10]

Summary

Introduction

The measurement of lens parameters is of great importance in both research of lens function, and calculation of the intraocular lens (IOL) power [1–5]. The commercially available devices providing in vivo lens parameters measurement include the Scheimpflug photography, anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM) [6–10]. Among them, the latter two could provide a full set of in-vivo lens biometry. The new generation swept-source optical coherence tomography (SS-OCT), CASIA2, can provide the automatic noncontact measurement of lens parameters using a built-in program. Since the light source of CASIA2 cannot penetrate the pigmented iris, the detection area is limited [7, 8]. To assess the reproducibility of the novel ultrasound biomicroscopy, Insight 100 and its agreement with a swept-source optical coherence tomography, CASIA2

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