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Updated: Mar 24, 2026

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Biometry measurements using a new large-coherence-length swept-source optical coherence tomographer.

H John Shammas1, Sergio Ortiz1, Maya C Shammas1

  • 1From the Department of Ophthalmology (H.J. Shammas), The Keck School of Medicine of the University of Southern California Los Angeles, the Shammas Eye Medical Center (H.J. Shammas, M.C. Shammas), Lynwood, and Movu, Inc. (Ortiz, Kim, Chong), San Jose, California, USA.

Journal of Cataract and Refractive Surgery
|March 8, 2016
PubMed
Summary

The new swept-source optical coherence tomography (SS-OCT) biometer demonstrates high repeatability and reproducibility for ocular measurements. This new biometer achieved a higher axial length (AL) acquisition rate compared to existing devices.

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Area of Science:

  • Ophthalmology
  • Biomedical Optics
  • Medical Device Technology

Background:

  • Advancements in biometry are crucial for accurate intraocular lens (IOL) power calculations.
  • New biometry devices aim to improve measurement accuracy and efficiency.

Purpose of the Study:

  • To assess the repeatability and reproducibility of measurements using the Argos swept-source optical coherence tomography (SS-OCT) biometer.
  • To compare the Argos SS-OCT biometer's performance against partial-coherence interferometry (PCI) and optical low-coherence reflectometry (OLCR) biometers.

Main Methods:

  • A prospective observational study was conducted in a private practice setting.
  • Measurements of ocular parameters including axial length (AL) were performed on 107 eyes using SS-OCT, PCI, and OLCR biometers.
  • Repeatability and reproducibility analyses were performed for the SS-OCT device.

Main Results:

  • The SS-OCT biometer exhibited low variation rates for all measured parameters, with high repeatability and reproducibility.
  • The SS-OCT device achieved a significantly higher axial length (AL) acquisition rate (96%) compared to OLCR (79%) and PCI (77%).
  • Comparisons showed comparable AL measurements between SS-OCT and both PCI and OLCR devices, with minimal mean differences.

Conclusions:

  • The Argos SS-OCT biometer provides reliable and reproducible ocular measurements.
  • The SS-OCT biometer offers a higher axial length acquisition rate, potentially improving surgical planning efficiency.
  • Measurements obtained with the SS-OCT biometer are comparable to those from established PCI and OLCR devices.