Repeatability of 2 swept-source OCT biometers and 1 optical low-coherence reflectometry biometer

Abstract

To compare the repeatability of 2 swept-source optical coherence tomography (SS-OCT) biometers, IOLMaster 700 (biometer A, Carl Zeiss Meditec AG) and ANTERION (biometer B, Heidelberg Engineering GmbH) and 1 optical low-coherence reflectometry (OLCR) device (biometer C, LENSTAR, LS900; Haag-Streit AG).

Repeatability assessment of anterior segment biometric measurements in myopic patients using a new anterior segment OCT with Placido corneal topography and agreement with a swept-source OCT

“…In terms of CCT measurement, excellent repeatability was con rmed by the small COR (1.94µm) and CoV (0.131%) scores and the ICC of 0.9996 from the current study. Measurements of CCT from MS-39 produced mean values (535.99 ± 34.17 µm) comparable to those previously reported using SS-OCT on healthy eyes [18][19][20][21][22][23]. Previous studies on myopic eyes showed that Pentacam HR rotating Scheimp ug camera and Sirius Scheimp ug camera-Placido topographer (CSO, Scandicci, FI, Italy) achieved inferior repeatability [24][25][26].…”

“…The repeatability of ACD was similar with that reported by Savini et al [16], although the ACD acquired in this study was slightly deeper, potentially due to the different population enrolled. Moreover, the new SD-OCT/Placido topographer showed higher repeatability in ACD measurements than those obtained from Scheimp ug cameras [24] and SS-OCT [20][21][22][23].…”

“…There are advantages as well as limitations in this study, compared with previous studies. The most important advantage is the large population examined, which included 235 eyes from 235 myopic patients, considerably more than previous studies [16,[18][19][20][21][22][23]. Additionally, only the right eye from each participant was measured, which eliminated the bias generated from bilateral-eye data.…”

Development and Verification of an Adjustment Factor for Determining the Axial Length Using Optical Biometry in Silicone Oil-Filled Eyes

“…The coefficient of variance (CoV) can be used to express the precision and repeatability of a measurement, where lower CoV values indicate higher accuracy. This metric has previously been used to report the quality of a measurements obtained with different biometers, including the IOLMaster and Pentacam [ 15 , 16 , 17 , 18 ]. In 2017, Ruiz-Mesa et al compared a Scheimpflug/PCI-based system with an optical low-coherence reflectometry (OLCR) device.…”

“…The latest biometers yield even better results: in a prospective clinical trial presented in 2021, Fişuş et al included 50 routine cataract patients to compare the repeatability of two SS-OCT biometers, the IOLMaster 700 and the Anterion (Heidelberg Engineering GmbH, Heidelberg, Germany), and one OLCR device, the Lenstar LS 900 (Haag-Streit AG, Köniz, Switzerland). For AL values, the CoV ranged between 0.006 and 0.012% [ 17 ]. In another recent study by Shetty et al comparing the Lenstar LS 900, IOLMaster 700, and Anterion, the CoVs for AL ranged between 0.029 and 0.058% [ 16 ].…”