Comparison of retinal layer thickness measurements obtained using two different swept-source optical coherence tomography imaging modes

Yoon, Yo Sep; Park, Chang Uk; Song, Jun; Min, Jung Kee

doi:10.1007/s10792-019-01276-5

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…This is not unexpected as low repeatability in one or both measurement modes is known to result in low agreement (24). Similarly, a previous study has reported the worst agreement for ILM-RPE thickness in the central sector (26).…”

Section: Discussionmentioning

confidence: 64%

Precision and Agreement of Individual and Simultaneous Macular and Optic Disc Volumetric Measurements With Spectral Domain Optical Coherence Tomography

et al. 2021

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Purpose: To evaluate the precision of individual and combined macula and optic disc volumetric analysis, and the agreement between these two scan modes with spectral domain optical coherence tomography (OCT).Methods: Macular and optic disc volumetric measurements were performed with individual and combined scan protocols in one eye of 75 healthy subjects. Three repeated measurements were performed with each protocol. From the macular area, retinal thickness in nine different sectors and ganglion cell complex thickness in eight different sectors were analyzed from both scan modes. From the optic disc area, the peripapillary retinal nerve fiber layer (pRNFL) thickness in 12 clock sectors and the optic disc parameters were evaluated. For all the parameters, repeatability limit and agreement analysis were performed.Results: For the retinal thickness measurements in macula, the combined scan had two to three times larger repeatability limit than the individual scan for all the sectors except the central sector, where the repeatability limit was five times larger. The limits of agreement intervals were lower than 20 μm for all sectors, except the central. The ganglion cell complex measurements also had larger repeatability limits for the combined scans, and the limits of agreement intervals were <10 μm for all sectors. For the pRNFL thickness, the repeatability values were distributed like a vertically elongated ellipse for both scans, but still the repeatability was better for individual scan compared to the combined scan. The shortest and widest interval are obtained for sectors 9 (9 μm) and 12 (40 μm), respectively. The repeatability limit was <0.15 units for all disc parameters with both scan modes.Conclusion: The individual macula and optic disc scans had better repeatability than the combined scan mode, and the two scan modes cannot be used interchangeability due to the wide limits of agreement.

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Section: Discussionmentioning

confidence: 64%

Precision and Agreement of Individual and Simultaneous Macular and Optic Disc Volumetric Measurements With Spectral Domain Optical Coherence Tomography

et al. 2021

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“…This difference can probably be explained by the differences in the study population (emmetropes vs. myopes), the technique of measurement (automatic vs. manual), and the model of OCT machine used (frequency-domain vs. spectral-domain). Previous studies have shown that retinal thickness may be affected by refractive status [32,33], measurement technique [34], and OCT machine model [35][36][37].…”

Section: Discussionmentioning

confidence: 99%

Measurement of Foveal Retinal Thickness in Myopic Patients Using Different Display Modes on Optical Coherence Tomography: A Retrospective, Cross-Sectional Study

Lawali

Guo³

et al. 2022

Ophthalmol Ther

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Introduction:The aim of this work is to investigate the differences in the measurement of foveal retinal thickness in myopic patients between two display modes (1:1 pixel and 1:1 micron) on optical coherence tomography (OCT). Methods: Horizontal OCT line scan through the central fovea was used for manual measurement of foveal retinal thickness under the two display modes, and the values were compared using Wilcoxon signed-rank test.Correlations between the OCT image tilting angle (OCT ITA) and differences in OCT measurement were analyzed by Spearman's test. Results: 127 participants with a median age of 28 years, a median spherical equivalent (SE) of -8.5 D, and a median axial length (AL) of 27.04 mm. There were significant differences between the two display modes, with a median absolute difference (median relative difference) of 13.33 lm (2.75%) for the central foveal thickness (CFT), 5.33 lm (1.28%) for the Henle fiber and outer nuclear layer thickness (HFL ? ONL), 3 lm (6.47%) for the external limiting membrane to ellipsoid zone distance (ELM-EZ),

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Comparison of retinal layer thickness measurements obtained using two different swept-source optical coherence tomography imaging modes

Cited by 2 publications

References 13 publications

Precision and Agreement of Individual and Simultaneous Macular and Optic Disc Volumetric Measurements With Spectral Domain Optical Coherence Tomography

Precision and Agreement of Individual and Simultaneous Macular and Optic Disc Volumetric Measurements With Spectral Domain Optical Coherence Tomography

Measurement of Foveal Retinal Thickness in Myopic Patients Using Different Display Modes on Optical Coherence Tomography: A Retrospective, Cross-Sectional Study

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