PMID- 38433240 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240306 IS - 2326-0254 (Print) IS - 2326-0254 (Electronic) IS - 2326-0254 (Linking) VI - 11 IP - 1 DP - 2024 Mar 4 TI - Evaluation of a new dynamic real-time visualization 25 kHz swept-source optical coherence tomography based biometer. PG - 9 LID - 10.1186/s40662-024-00377-2 [doi] LID - 9 AB - BACKGROUND: To evaluate the intraobserver repeatability and interobserver reproducibility of a newly developed dynamic real-time visualization 25 kHz swept-source optical coherence tomography (SS-OCT) based biometer (ZW-30, TowardPi Medical Technology Ltd, China) and compare its agreement with another SS-OCT based biometer (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany). METHODS: Eighty-two healthy right eyes were enrolled in this prospective observational study. Measurements were repeated for three times using the ZW-30 and IOLMaster 700 in a random order. Obtained parameters included axial length (AL), central corneal thickness (CCT), aqueous depth (AQD), anterior chamber depth (ACD), lens thickness (LT), mean keratometry (Km), astigmatism magnitude (AST), vector J(0), vector J(45), and corneal diameter (CD). The within-subject standard deviation (Sw), test-retest (TRT) variability, coefficient of variation (CoV), and intraclass correlation coefficient (ICC) were adopted to assess the intraobserver repeatability and interobserver reproducibility. The double-angle plot was also used to display the distribution of AST. To estimate agreement, Bland-Altman plots were used. RESULTS: For the intraobserver repeatability and interobserver reproducibility, the Sw, TRT and CoV for all parameters were low. Meanwhile, the ICC values were all close to 1.000, except for the J(45) (ICC = 0.887 for the intraobserver repeatability). The double-angle plot showed that the distribution of AST measured by these two devices was similar. For agreement, the Bland-Altman plots showed narrow 95% limits of agreements (LoAs) for AL, CCT, AQD, ACD, LT, Km AST, J(0), J(45), and CD (- 0.02 mm to 0.02 mm, - 7.49 mum to 8.08 mum, - 0.07 mm to 0.04 mm, - 0.07 mm to 0.04 mm, - 0.07 mm to 0.08 mm, - 0.16 D to 0.30 D, - 0.30 D to 0.29 D, - 0.16 D to 0.16 D, - 0.23 D to 0.13 D, and - 0.39 mm to 0.10 mm, respectively). CONCLUSIONS: The newly dynamic real-time visualization biometer exhibited excellent intraobserver repeatability and interobserver reproducibility. The two devices both based on the SS-OCT principle had similar ocular parameters measurement values and can be interchanged in clinical practice. CI - (c) 2024. The Author(s). FAU - Yu, Jinjin AU - Yu J AD - Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, N No. 19 Baoqing Road, Xuhui District, Shanghai, 200031, China. AD - Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China. AD - Ningbo No. 2 Hospital, Ningbo, Zhejiang, China. AD - NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. FAU - Lin, Xuanqiao AU - Lin X AD - Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China. FAU - Huang, Xiaomin AU - Huang X AD - Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, N No. 19 Baoqing Road, Xuhui District, Shanghai, 200031, China. AD - Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China. AD - NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. FAU - Xu, Zhenyu AU - Xu Z AD - Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, N No. 19 Baoqing Road, Xuhui District, Shanghai, 200031, China. AD - Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China. AD - NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. FAU - Ning, Rui AU - Ning R AD - Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, N No. 19 Baoqing Road, Xuhui District, Shanghai, 200031, China. AD - Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China. AD - NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. FAU - Li, Kexin AU - Li K AD - Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, N No. 19 Baoqing Road, Xuhui District, Shanghai, 200031, China. AD - Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China. AD - NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. FAU - Savini, Giacomo AU - Savini G AD - IRCCS Bietti Foundation, Rome, Italy. FAU - Schiano-Lomoriello, Domenico AU - Schiano-Lomoriello D AD - IRCCS Bietti Foundation, Rome, Italy. FAU - Zhou, Xingtao AU - Zhou X AD - Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, N No. 19 Baoqing Road, Xuhui District, Shanghai, 200031, China. doctzhouxingtao@163.com. AD - Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China. doctzhouxingtao@163.com. AD - NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. doctzhouxingtao@163.com. FAU - Huang, Jinhai AU - Huang J AUID- ORCID: 0000-0001-9952-3175 AD - Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, N No. 19 Baoqing Road, Xuhui District, Shanghai, 200031, China. vip999vip@163.com. AD - Shanghai Research Center of Ophthalmology and Optometry, Shanghai, China. vip999vip@163.com. AD - NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. vip999vip@163.com. LA - eng GR - 82271048/Project of National Natural Science Foundation of China/ GR - 22S11900200/Shanghai Science and Technology/ GR - 23XD1420500/Shanghai Science and Technology/ GR - 2021318/EYE & ENT Hospital of Fudan University High-level Talents Program/ GR - SHDC2020CR1043B/Clinical Research Plan of SHDC/ GR - 2020-015/Project of Shanghai Xuhui District Science and Technology/ GR - Eastern Scholar/Program for Professor of Special Appointment at Shanghai Institutions of Higher Learning/ GR - TP2022046/Program for Professor of Special Appointment at Shanghai Institutions of Higher Learning/ GR - 2022/Fondazione Roma and the Italian Ministry of Health/ PT - Journal Article DEP - 20240304 PL - England TA - Eye Vis (Lond) JT - Eye and vision (London, England) JID - 101664982 PMC - PMC10910812 OTO - NOTNLM OT - Agreement OT - Ocular biometric OT - Repeatability OT - Reproducibility OT - Swept-source optical coherence tomography COIS- Dr. Savini received lecture fees from Alcon, Johnson & Johnson, SIFI and Zeiss and research grant from Alcon. Other authors have no proprietary or financial interest in any materials discussed in this article. EDAT- 2024/03/04 00:43 MHDA- 2024/03/04 00:44 PMCR- 2024/03/04 CRDT- 2024/03/03 23:17 PHST- 2023/09/05 00:00 [received] PHST- 2024/02/10 00:00 [accepted] PHST- 2024/03/04 00:44 [medline] PHST- 2024/03/04 00:43 [pubmed] PHST- 2024/03/03 23:17 [entrez] PHST- 2024/03/04 00:00 [pmc-release] AID - 10.1186/s40662-024-00377-2 [pii] AID - 377 [pii] AID - 10.1186/s40662-024-00377-2 [doi] PST - epublish SO - Eye Vis (Lond). 2024 Mar 4;11(1):9. doi: 10.1186/s40662-024-00377-2.