Cited by 29Retinal Diseases and TreatmentsRetinal Imaging and AnalysisGlaucoma and retinal disorders

High-Density Optical Coherence Tomography Analysis Provides Insights Into Early/Intermediate Age-Related Macular Degeneration Retinal Layer Changes

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Trinh, Matt, Kalloniatis, Michael, Alonso-Caneiro, David, Nivison-Smith, Lisa·2022·Investigative Opthalmology & Visual Science

Abstract

Purpose: To topographically map all of the thickness differences in individual retinal layers between early/intermediate age-related macular degeneration (AMDearly/AMDint) and normal eyes and to determine interlayer relationships. Methods: Ninety-six AMDtotal (48 AMDearly and 48 AMDint) and 96 normal eyes from 192 participants were propensity-score matched by age, sex, and refraction. Retrospective optical coherence tomography (OCT) macular cube scans were acquired, and high-density (60 × 60 0.01-mm2) grid thicknesses were custom extracted for comparison between AMDtotal and normal eyes corrected for confounding. Resultant "normal differences" underwent cluster, interlayer correlation, and dose-response analyses for the retinal nerve fiber layer (RNFL), ganglion cell layer (GCL), inner plexiform layer (IPL), inner nuclear layer (INL), outer plexiform layer (OPL), outer nuclear layer + Henle's fiber layer (ONL+HFL), inner and outer segment (IS/OS) thickness, and retinal pigment epithelium (RPE) to Bruch's membrane (BM) thickness. Results: AMDtotal inner retinal clusters demonstrated extensively thinned RNFL, GCL, IPL, and paracentral INL and thickened INL elsewhere, with normal difference means ranging from -8.13 µm (95% confidence interval [CI], -11.12 to -5.13) to 1.58 µm (95% CI, 1.07-2.09) (P < 0.0001 to P < 0.05). Outer retinal clusters displayed thinned paracentral OPL/ONL+HFL, central IS/OS, and peripheral RPE-BM and thickened central RPE-BM, with means ranging from -1.31 µm (95% CI, -2.06 to -0.55) to 2.99 µm (95% CI, 0.97-5.01] (P < 0.0001 to P <0.05). Effect sizes (-2.56 to 9.93 SD), cluster sizes, and eccentricity effects varied. All interlayer correlations were negligible to moderate regardless of AMD severity. Only the RPE-BM was partly thicker with greater AMD severity (up to 5.44 µm; 95% CI, 4.88-6.00; P < 0.01). Conclusions: From the early stage, AMD eyes demonstrate thickness differences compared to normal with unique topographies across all retinal layers. Poor interlayer correlations highlight that the outer retina inadequately reflects complete retinal health. The clinical importance of OCT assessment across all individual retinal layers in early/intermediate AMD requires further investigation.

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  1. [18]Trinh M, Kalloniatis M, Nivison-Smith L. Location-specific patterns of inner retinal thinning in intermediate age-related macular degeneration. Invest Ophthalmol Vis Sci. 2021; 62: 305. PMC8525852 34661608
  2. [37]Heidelberg Engineering GmbH. SPECTRALIS®. Glaucoma Module Premium Edition. User Manual Software Version 6.7. Heidelberg, Germany: Heidelberg Engineering GmbH; 2016.
  3. [46]Vichi M. Data Science: Innovative Developments in Data Analysis and Clustering. Cham, Switzerland: Springer Nature; 2017.

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Authors
Trinh, M., Kalloniatis, M., Alonso-Caneiro, D., & Nivison-Smith, L.
Affiliations
  • UNSW Sydney (AU)
  • Contact Lens and Visual Optics Laboratory, Queensland University of Technology, Brisbane, Queensland, Australia
  • Centre for Eye Health, University of New South Wales, Sydney, New South Wales, Australia
Venue
Investigative Opthalmology & Visual Science
Published
2022-05-27
Volume
63
Issue
5
Pages
36
ISSN
  • 0146-0404 (ISSN-L)
  • 1552-5783
OpenAlex
W4281688793
Cited by
29
References
104
Citations by year
2026: 8 · 2025: 1 · 2024: 10 · 2023: 7 · 2022: 3
FWCI
4.69
Type
journal article
Language
en
Open access
Locations
  • Investigative Ophthalmology & Visual Science (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Griffith Research Online (submittedVersion, cc-by-nc-nd)
Funders
  • Medical Research Council
  • National Health and Medical Research Council (1174385, 1186915)
Topics
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Retinal Imaging and Analysis
  • Health Sciences › Medicine › Ophthalmology › Glaucoma and retinal disorders
Keywords
age-related macular degeneration, retinal layer thickness, retinal nerve fiber layer, ganglion cell layer, inner nuclear layer, outer nuclear layer, retinal pigment epithelium, Bruch's membrane, retinal topography
MeSH terms
Humans, Macular Degeneration, Retina, Retrospective Studies, Tomography, Optical Coherence, Retinal Pigment Epithelium

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