Comparison of Optical Biometry Data Measured with Lenstar and Anterion Devices

Overview

Objective: The aim of this study is to compare the results of preoperative biometric data measured with optical biometers of different generations in patients with cataract. Lenstar optical biometry is based on the principle of optical low-coherence reflectometry (OLCR), and Anterion on swept-source optical coherence tomography (SS-OCT).

Material and methods: A total of 200 eyes (103 patients) were included in a prospective study at the Faculty Hospital in Trenčín the period from June 2023 to January 2024. We compared the results of 6 parameters: axial length (AL), mean keratometry (K), lens thickness (LT), white-to-white diameter (WTW), astigmatism (AST), and intraocular lens (IOL) power. The results were statistically analyzed.

Results: The values of AL, AST, and IOL parameters between the Lenstar and Anterion biometers were consistent, with no statistically significant difference (p = 0.593; p = 0.089; p = 0.069). The values of K, LT, and WTW showed statistically significant differences (p < 0.001). A Bland-Altman plot analysis confirmed good concordance between the parameters within a 95% limit of agreement.

Conclusion: Biometric data measurement using SS-OCT Anterion is reliable, quick, and the results are comparable to those obtained with Lenstar. The AL, AST, and estimated IOL values were consistent between the biometers. Despite differences in the measurements of LT, WTW, and K parameters, the final IOL value was the same. In addition to biometric data, Anterion provides comprehensive tomographic examination of the cornea and OCT scanning of the anterior segment.

Keywords:

optical biometry – cataract – Lenstar – Anterion – biometry comparison