Comparative analysis of 2 biometers using swept-source OCT technology

摘要

Purpose: To report the repeatability, level of agreement, and correlation of 2 swept-source optical coherence tomography (SS-OCT) biometers, the lOLMaster 700 (biometer A) and the ANTERION (biometer B).Setting: Rothschild Foundation Hospital, Paris, France. Design: Prospective comparative case series.Methods: Consecutive patients who attended for cataract assessment had SS-OCT biometry performed with the reference, biometer A, and biometer B. Axial length, mean keratometry, central corneal thickness, anterior chamber depth, lens thickness, and corneal diameter measurements (white-to-white WTW distance) were measured. The intraoperator repeatability was calculated using analysis of variance and repeatability limits.Correlations were assessed, and the level of agreement between the biometers was represented with the Bland-Altman method.Results: The study comprised 63 patients (125 eyes). There was a statistically significant difference between the 2 biometers in all measurements (P < .05). All repeatability measurements were very high, as were the level of correlation and level of agreement between biometer A and biometer B for all parameters.Conclusions: Biometer B provided good agreement and repeatability compared with biometer A; however, all parameters were not interchangeable, particularly, the WTW measurement and the high keratometric values.