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Agreement and clinical comparison between a new swept-source optical coherence tomography-based optical biometer and an optical low-coherence reflectometry biometer

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Arriola Villalobos, Pedro y Almendral Gómez, Jaime y Garzón Jiménez, Nuria y Ruiz Medrano, Jorge y Fernández Pérez, Cristina y Martínez de la Casa, Jose Maria y Díaz Valle, David (2017) Agreement and clinical comparison between a new swept-source optical coherence tomography-based optical biometer and an optical low-coherence reflectometry biometer. Eye, 31 (3). pp. 437-442. ISSN 0950-222X

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URL Oficial: http://dx.doi.org/10.1038/eye.2016.241




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Purpose To compare measurements taken using a swept-source optical coherence tomography-based optical biometer (IOLmaster 700) and an optical low-coherence reflectometry biometer (Lenstar 900), and to determine the clinical impacts of differences in their measurements on intraocular lens (IOL) power predictions. Methods Eighty eyes of 80 patients scheduled to undergo cataract surgery were examined with both biometers. The measurements made using each device were axial length (AL), central corneal thickness (CCT), aqueous depth (AQD), lens thickness (LT), mean keratometry (MK), white-to-white distance (WTW), and pupil diameter (PD). Holladay 2 and SRK/T formulas were used to calculate IOL power. Differences in measurement between the two biometers were determined using the paired t-test. Agreement was assessed through intraclass correlation coefficients (ICC) and Bland-Altman plots. Results Mean patient age was 76.3±6.8 years (range 59-89). Using the Lenstar, AL and PD could not be measured in 12.5 and 5.25% of eyes, respectively, while IOLMaster 700 took all measurements in all eyes. The variables CCT, AQD, LT, and MK varied significantly between the two biometers. According to ICCs, correlation between measurements made with both devices was excellent except for WTW and PD. Using the SRK/T formula, IOL power prediction based on the data from the two devices were statistically different, but differences were not clinically significant. Conclusions No clinically relevant differences were detected between the biometers in terms of their measurements and IOL power predictions. Using the IOLMaster 700, it was easier to obtain biometric measurements in eyes with less transparent ocular media or longer AL.


Tipo de documento:Artículo
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Received: 11 April 2016; Accepted: 07 September 2016; Published online: 11 November 2016

Palabras clave:Lens diseases; Physycal examination; Optica biometer; Optical coherence tomography; Intraocular lens
Materias:Ciencias Biomédicas > Medicina > Cirugía
Ciencias Biomédicas > Medicina > Diagnóstico por imagen y medicina nuclear
Ciencias Biomédicas > Medicina > Oftalmología
Ciencias Biomédicas > Óptica y optometría > Óptica oftálmica
Código ID:47113
Depositado:11 Abr 2018 12:15
Última Modificación:11 Abr 2018 15:15

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