Evidence map›Paper›PMID 27818206›Full record

ArticleAmerican journal of ophthalmology2017

Automated Segmentation Errors When Using Optical Coherence Tomography to Measure Retinal Nerve Fiber Layer Thickness in Glaucoma.

Steven L Mansberger, Shivali A Menda, Brad A Fortune, Stuart K Gardiner, Shaban Demirel

Open access · greenAbstract read
In one paragraph

Article in American journal of ophthalmology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
4.9field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

61 citing papers in PubMed, 100 citations in OpenAlex.

  1. AI-driven multimodal retinal imaging for early detection and risk stratification of vascular and neurodegenerative diseases.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Review
  2. Article
  3. Artificial Intelligence in Glaucoma Detection and Progression.Advances in ophthalmology and optometry · 2026
    Article
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  6. Rhesus macaques with anProceedings of the National Academy of Sciences of the United States of America · 2026
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  12. Review
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  15. Intraday repeatability of macular layers measurements in glaucomatous and non-glaucomatous patients using spectral-domain optical coherence tomography.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Article
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1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Steven L MansbergerLegacy Devers Eye Institute, Portland, Oregon. Electronic address: smansberger@deverseye.org.
Shivali A MendaLegacy Devers Eye Institute, Portland, Oregon.
Brad A FortuneLegacy Devers Eye Institute, Portland, Oregon.
Stuart K GardinerLegacy Devers Eye Institute, Portland, Oregon.
Shaban DemirelLegacy Devers Eye Institute, Portland, Oregon.
Legacy Health · US

Funding

Predicting the rate of progression in glaucomaR01EY019674 · NEI · LEGACY EMANUEL HOSPITAL AND HEALTH CENTER · PI DEMIREL, SHABAN · 2009 to 2013
$1.8M
NEI NIH HHS R01 EY019674
6 · The paper itself

Abstract

purposeTo characterize the error of optical coherence tomography (OCT) measurements of retinal nerve fiber layer (RNFL) thickness when using automated retinal layer segmentation algorithms without manual refinement.

designCross-sectional study.

methodsThis study was set in a glaucoma clinical practice, and the dataset included 3490 scans from 412 eyes of 213 individuals with a diagnosis of glaucoma or glaucoma suspect. We used spectral domain OCT (Spectralis) to measure RNFL thickness in a 6-degree peripapillary circle, and exported the native "automated segmentation only" results. In addition, we exported the results after "manual refinement" to correct errors in the automated segmentation of the anterior (internal limiting membrane) and the posterior boundary of the RNFL. Our outcome measures included differences in RNFL thickness and glaucoma classification (i.e., normal, borderline, or outside normal limits) between scans with automated segmentation only and scans using manual refinement.

resultsAutomated segmentation only resulted in a thinner global RNFL thickness (1.6 μm thinner, P < .001) when compared to manual refinement. When adjusted by operator, a multivariate model showed increased differences with decreasing RNFL thickness (P < .001), decreasing scan quality (P < .001), and increasing age (P < .03). Manual refinement changed 298 of 3486 (8.5%) of scans to a different global glaucoma classification, wherein 146 of 617 (23.7%) of borderline classifications became normal. Superior and inferior temporal clock hours had the largest differences.

conclusionsAutomated segmentation without manual refinement resulted in reduced global RNFL thickness and overestimated the classification of glaucoma. Differences increased in eyes with a thinner RNFL thickness, older age, and decreased scan quality. Operators should inspect and manually refine OCT retinal layer segmentation when assessing RNFL thickness in the management of patients with glaucoma.

Indexed as

AlgorithmsDiagnostic ErrorsAgedCross-Sectional StudiesFemaleGlaucomaHumansIntraocular PressureMaleNerve FibersReproducibility of ResultsRetinal Ganglion CellsTomography, Optical Coherence

Identifiers

PMID27818206
PMCPMC5548380
OpenAlexW2547055928

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.