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Comparison analysis of two swept-source optical coherence tomography (SS-OCT)-based biometers

Poster Details

First Author: F.Sabatino UK

Co Author(s):    F. Matarazzo   V. Maurino                 

Abstract Details


To report the level of agreement, repeatability and correlation of two swept-source optical coherence tomography (ss-OCT) biometers, the IOLMaster 700 (Carl Zeiss Meditec AG, Germany) (reference biometer) and the Argos (Movu, Inc.) (new biometer), in terms of axial length (AL), keratometric mean (mean K), central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT) and corneal diameter (CD).


Moorfields Eye Hospital NHS Foundation Trust, London, UK.


Each participant underwent ss-OCT biometry with the reference and new biometer. In addition to reporting the statistical results derived from both eyes, this study included a subgroup analysis of right eyes and left eyes. The level of agreement between the biometers was calculated with the Bland-Altman method. Double-angle polar plots were used to display the astigmatism vectors. Internal consistency was assessed with the Cronbach’s alpha coefficient of reliability whereas the dispersion of probability distribution was computed with the coefficient of variation (CoV). The intra-operator repeatability was calculated using the intraclass correlation coefficient (ICC).


A total of 112 participants (218 eyes) were included in this study. There was a statistically significant difference between the 2 biometers in all measurements (P < .05) except for AL. The level of correlation between the reference and the new biometer was very high for all the parameters except for CD and the agreement was high. The ICC and internal consistency were excellent with both biometers.


The new biometer provided good agreement and repeatability, compared to the reference biometer.

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