Agreement between a swept-source ocular coherence tomography biometrer, a spectral-domain ocular coherence tomography biometrer, and an optical low coherence reflectometry biometer in eyes with cataract

Abstract

Abstract Background This study aimed to assess the agreement between biometric parameters measured by a spectral-domain OCT optical biometer device (Optopol Revo NX) with a validated Swept-source biometer (IOLMaster 700) and a validated optical low coherence reflectometry (OLCR) biometer (Lenstar LS 900), in cataract surgery candidates. Methods In this prospective comparative study, 100 patients (100 eyes) who were eligible for cataract surgery were involved. Bland Altman analysis was used to assess agreement between devices for biometric parameters including axial length (AL), anterior chamber depth (ACD), lens thickness (LT), and central corneal thickness (CCT). Results AL measurements were successful in 82 eyes (82.0%) with Revo NX, in 91 eyes (91.0%) with Lenstar LS 900, and in 97 eyes (97.0%) with IOL Master 700. When Revo NX was compared to IOLMaster 700 and Lenstar LS 900, the mean differences were as follows: -0.02 ± 0.0.02 and − 0.02 ± 0.03 for AL, 0.01 ± 0.03 and 0.10 ± 0.03 (p < 0.05) for ACD, -0.15 ± 0.03 (p < 0.05) and 0.001 ± 0.04 for LT, and − 2.29 ± 0.92 (p < 0.05) and 0.73 ± 1.43 for CCT. There was a good correlation between devices for AL, ACD, LT, and CCT (ICC > 0.75). Bland-Altman analysis showed a narrower 95% limit of agreement (-0.35 to 0.31) between Revo NX and IOL Master 700 in measuring AL. Conclusion Despite the higher measurement failure rate in eyes with cataract, the Revo NX showed very good agreement with the IOL Master 700 and Lenstar LS 900 optical biometers in measuring AL, ACD, LT, and CCT. However, ACD and LT measurements can not be considered interchangeable between these devices.