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Sources of Self-Esteem III: Social Comparison01:27

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Related Experiment Video

Updated: Feb 3, 2026

Retinal and Choroidal Thickness Changes in Populations with Helicobacter pylori Infection by Swept-Source Optical Coherence Tomography
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Comparison of a new swept-source optical biometer with a partial coherence interferometry.

Hyo Kyung Lee1,2, Mee Kum Kim3,4

  • 1Department of Ophthalmology, Seoul National University College of Medicine, 103 Daehak-Ro, Jongno-Gu, Seoul, 110-799, Republic of Korea.

BMC Ophthalmology
|October 21, 2018
PubMed
Summary

A new swept-source optical coherence tomography (SS-OCT) biometer shows superior examination success rates compared to partial coherence interferometry (PCI). While axial length and keratometry differ, intraocular lens power calculations remain comparable, indicating SS-OCT

Keywords:
IOLMaster 700Intraocular lens power calculationOptical biometerSwept-source optical coherence tomography

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Area of Science:

  • Ophthalmology
  • Biomedical optics
  • Medical instrumentation

Background:

  • Accurate biometric parameter measurement is crucial for intraocular lens (IOL) power calculation.
  • Comparing new swept-source optical coherence tomography (SS-OCT) biometry with established partial coherence interferometry (PCI) methods is essential for clinical adoption.

Purpose of the Study:

  • To compare biometric parameters (axial length, keratometry, anterior chamber depth) obtained by SS-OCT and PCI biometers.
  • To evaluate and compare intraocular lens (IOL) power calculation accuracy between the two biometry devices.

Main Methods:

  • Retrospective review of 175 eyes implanted with monofocal IOLs (Tecnis ZCB00 or Acrysof SA60AT).
  • Comparison of axial length (AL), mean keratometry (Km), J0, J45, and anterior chamber depth (ACD) between SS-OCT and PCI biometers.
  • Analysis of refractive mean error (ME) and mean absolute error (MAE) using standard IOL power calculation formulas and assessment of examination failure rates.

Main Results:

  • SS-OCT measured AL slightly shorter and Km higher than PCI (P < .0001, P = .03).
  • No significant differences were found in J0, J45, or ACD between the devices.
  • Examination failure rates were significantly lower for SS-OCT (1.14%) compared to PCI (14.29%).

Conclusions:

  • Axial length and keratometry measurements are not directly comparable between SS-OCT and PCI biometers.
  • IOL power calculations using SRK-T and Hoffer Q formulas showed good correlation between the devices.
  • SS-OCT biometry demonstrates superior penetration ability and significantly lower examination failure rates.