Agreement of Vault Size Measurements between the Pentacam®, the Anterion® and the Spectralis®
DOI:
https://doi.org/10.48560/rspo.28273Keywords:
Anterior Chamber, Lens Implantation, IntraocularAbstract
Introduction: Despite good refractive results, implantable collamer lens (ICL) implantation may lead to postoperative complications. One indicator of its safety is the vault size. Our purpose was to evaluate the agreement of vault size measurements between the Pentacam®, the Anterion® and the Spectralis®.
Methods: Cross-sectional analysis of eyes previously submitted to ICL implantation. Vault size was evaluated with the Pentacam® HR, the Anterion® and the Spectralis® (anterior segment). Secondarily, the anterior chamber depth (ACD) was evaluated with the Pentacam® and the Anterion®. Images of the same patient were performed on the same day, by the same technician. Vault and ACD measurements were performed by two refractive surgeons. Images were randomly divided into three groups and each group was analyzed one week apart, by each observer, with images in a randomized order.
Results: Fifty-five eyes (30 patients) were included. The intraclass correlation coefficient (ICC) for absolute agreement and consistency of vault measurements was good to excellent. The vault measurements obtained with Pentacam® were inferior to those obtained with the Anterion® and the Spectralis® (p<0.001). There were no differences between the Anterion® and the Spectralis® (p>0.697). The differences in the vault measurements between the Anterion® and the Pentacam® correlated positively with the increase of the vault size in the Anterion® (p<0.001) and the differences between the Spectralis® and the Pentacam® correlated positively with the increase of the vault size in the Spectralis® (p<0.001). The difference in vault measurements between the Anterion® and the Pentacam® correlated positively with the increase of the pupillary diameter in the Anterion® (p<0.006) and the difference between the Spectralis® and the Pentacam® correlated with the increase of the pupillary diameter in the Spectralis® (p<0.014). For ACD, the ICC for absolute agreement and for consistency between the Pentacam® and the Anterion® was good. Pentacam® provided inferior ACD sizes, compared to the Anterion® (p<0.001).
Conclusion: While the Anterion® and the Spectralis® may be used interchangeably, Pentacam® provided inferior values to those obtained with the other devices. The differences in vault size between devices are influenced by the vault size and the pupillary diameter measured with the Spectralis® and the Anterion®.
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