Comparison of two swept-source optical coherence tomography biometers for the measurement of ocular biological parameters in cataracts
10.13389/j.cnki.rao.2025.0084
- VernacularTitle:两种扫频光学相干断层成像生物测量仪测量白内障患者眼部生物学参数的比较
- Author:
Yifeng LI
1
;
Wenli YANG
1
;
Dongjun LI
1
;
Ziyang WANG
1
;
Wei CHEN
1
;
Qi ZHAO
1
;
Rui CUI
1
;
Lin SHEN
1
Author Information
1. 100730 北京市,首都医科大学附属北京同仁医院 北京同仁眼科中心 北京市眼科学与视觉科学重点实验室
- Publication Type:Journal Article
- Keywords:
cataract;
biometry;
swept-source optical coherence tomography;
axial length;
corneal refractive power
- From:
Recent Advances in Ophthalmology
2025;45(6):481-485
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the difference,agreement,and axial length measurement success rate between biometers ZW-30 and IOLMaser 700 based on swept-source optical coherence tomography for the measurement of ocular bi-ological parameters in patients with cataracts.Methods A total of 126 cataract patients(233 eyes)who were advised to undergo cataract surgery at the Department of Ophthalmology at Beijing Tongren Hospital,Capital Medical University from January to February 2024 were included in this study.Two biometers were used to measure the axial length(AL),mean keratometry(Km),anterior chamber depth(ACD),lens thickness(LT),central corneal thickness(CCT),and horizontal corneal diameter[namely,the white-to-white(WTW)distance].The axial measurement success rate of the two biometers and the difference and agreement between the parameters were calculated.Results The mean difference between ZW-30 and IOLMaster 700 was(-0.006±0.042)mm for AL,(-0.074±0.204)D for Km,(0.031±0.051)mm for ACD,(0.001±0.005)mm for CCT,and(-0.286±0.337)mm for WTW,and the differences were statistically significant(all P＜0.05).The mean difference between ZW-30 and IOLMaster 700 was(0.008±0.215)mm for LT,and the difference was not statis-tically significant(t=0.579,P=0.563).The 95％limits of agreement range was between-0.011 mm and 0.000 mm for AL,between-0.474 D and 0.326 D for Km,between-0.010 mm and 0.012 mm for CCT,between-0.068 mm and 0.131 mm for ACD,between-0.116 mm and 0.159 mm for LT,and between-0.947 mm and 0.376 mm for WTW.The intra-class correlation coefficient of all measurements ranged from 0.790 to 1.000.The AL measurement success rate of IOLMaster 700 and ZW-30 was 95.3％and 95.7％,respectively.The latter had an AL measurement success rate of 98.7％after manually marking the position of the retinal identification line.Conclusion There were statistically significant differences between ZW-30 and IOLMaster 700 in the measurement of the AL,Km,ACD,and CCT,which,however,were not clinically significant.The agreement between both was good.ZW-30 had a higher AL measurement success rate,espe-cially for the manual identification function of eyes with opacified refractive media,which can further improve the AL meas-urement success rate and provide reference for clinical work.
