Abstract
BackgroundPrecise measurement of ocular biometry is critical for determining intraocular lens power. Newly developed swept-source optical coherence tomography (SS-OCT) - based ocular biometric devices, ANTERION and CASIA2 provide ocular biometric measurements as IOLMaster 700. This study aimed to assess agreement between three devices.MethodsThis retrospective comparative study includes patients with cataract who underwent ocular biometric measurements with three devices, ANTERION, CASIA2, and IOLMaster 700, at Seoul National University Hospital, in April 2020. Anterior keratometry, total keratometry, central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT), and axial length (AL) were the main parameters for the comparison. To assess the agreement between the devices, intraclass coefficient (ICC) and Bland-Altman analysis with 95% limits of agreement (LoA) were used.ResultsA total of 47 eyes of 29 patients were measured with three devices. Average anterior keratometry showed excellent agreement (ICC ≥ 0.989), and the mean difference was less than 0.1 D. However, the ICC of the total average keratometry ranged from 0.808 to 0.952, and the difference was more than 0.43 D. The AL measured by ANTERION and IOLMaster 700 showed excellent agreement (ICC = 0.999), and the mean difference was 0.005 mm. The ANTERION and IOLMaster 700 did not obtain AL in six (12.8%) and three (6.4%) cases, respectively (P = 0.001 by Fisher’s exact test). The CCT, ACD, and LT also showed excellent agreement (ICC > 0.9).ConclusionsThe new SS-OCT-based devices, ANTERION, and CASIA2 showed a good agreement with IOLMaster 700 in measuring ocular biometry except for the total keratometry. The AL of ANTERION and IOLMaster 700 showed excellent agreement.
Highlights
Precise measurement of ocular biometry is critical for determining intraocular lens power
This study aimed to assess the agreement between three devices, ANTERION, CASIA2, and IOLMaster 700, in terms of ocular biometry
Because IOLMaster 700 measures the anterior chamber depth (ACD) from the corneal epithelium to the anterior lens surface, we subtracted the central corneal thickness (CCT) value from the ACD measured by the IOLMaster 700
Summary
Precise measurement of ocular biometry is critical for determining intraocular lens power. Developed swept-source optical coherence tomography (SS-OCT) - based ocular biometric devices, ANTERION and CASIA2 provide ocular biometric measurements as IOLMaster 700. The higher the generation of the intraocular lens (IOL) calculation formula, the higher the accuracy, and more ocular biometric parameters are required [1]. In this regard, precise measurement of ocular biometry is critical for determining the power of IOLs [2]. Ocular biometry measurement devices with principles of swept-source optical coherence tomography (SS-OCT) were developed. SS-OCT devices use 1000–1350 nm of wavelength They can provide a whole image from the cornea to the posterior lens. Many studies have shown that IOLMaster 700 had good agreement with other devices, including IOLMaster 500 [5,6,7]
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.