Evidence map›Paper›PMID 23538582›Full record

ArticleRetina (Philadelphia, Pa.)2013

Plus disease diagnosis in retinopathy of prematurity: vascular tortuosity as a function of distance from optic disk.

Katie M Keck, Jayashree Kalpathy-Cramer, Esra Ataer-Cansizoglu, Sheng You, Deniz Erdogmus, Michael F Chiang

Abstract read
In one paragraph

Article in Retina (Philadelphia, Pa.), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 26 citations in OpenAlex.

  1. Trial
  2. Article
  3. Establishing an objective quantitative method for assessing the severity of plus disease in retinopathy of prematurity.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
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  12. Observational
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  16. Plus Disease in Retinopathy of Prematurity: More Than Meets the ICROP?Asia-Pacific journal of ophthalmology (Philadelphia, Pa.)
    Review
  17. Article
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

6 authors at 3 institutions in 1 country.

Katie M KeckDepartment of Ophthalmology, Oregon Health & Science University, Portland, OR, USA.
Jayashree Kalpathy-Cramer
Esra Ataer-Cansizoglu
Sheng You
Deniz Erdogmus
Michael F Chiang
Northeastern University · USOregon Health & Science University · USMassachusetts General Hospital · US

Funding

Clinical and Genetic Analysis of Retinopathy of PrematurityR01EY019474 · NEI · OREGON HEALTH & SCIENCE UNIVERSITY · PI CAMPBELL, JOHN PETER · 2010 to 2020
$7.0M
Clinical Image Retrieval: User needs assessment toolbox development & evaluationR00LM009889 · NLM · MASSACHUSETTS GENERAL HOSPITAL · PI KALPATHY-CRAMER, JAYASHREE · 2011 to 2013
$690k
Automated retinopathy of prematurity classification using machine learningR21EY022387 · NEI · MASSACHUSETTS GENERAL HOSPITAL · PI CHIANG, MICHAEL F., KALPATHY-CRAMER, JAYASHREE · 2013 to 2014
$482k
Clinical Image Retrieval: User needs assessment, toolbox development & evaluationK99LM009889 · NLM · OREGON HEALTH & SCIENCE UNIVERSITY · PI KALPATHY-CRAMER, JAYASHREE · 2009 to 2010
$216k
NEI NIH HHS R01 EY019474NEI NIH HHS R21 EY022387NLM NIH HHS K99 LM009889NLM NIH HHS R00 LM009889
6 · The paper itself

Abstract

purposeTo examine vascular tortuosity as a function of distance from the optic disk in infants with retinopathy of prematurity.

methodsThirty-four wide-angle retinal images from infants with retinopathy of prematurity were reviewed by 22 experts. A reference standard for each image was defined as the diagnosis (plus vs. not plus) given by the majority of experts. Tortuosity, defined as vessel length divided by straight line distance between vessel end points, was calculated as a function of distance from the disk margin for arteries and veins using computer-based methods developed by the authors.

resultsMean cumulative tortuosity increased with distance from the disk margin, both in 13 images with plus disease (P = 0.007 for arterial tortuosity [n = 62 arteries], P < 0.001 for venous tortuosity [n = 58 veins] based on slope of best fit line by regression), and in 21 images without plus disease (P < 0.001 for arterial tortuosity [n = 94 arteries], P <0 .001 for venous tortuosity [n = 85 veins]). Images with plus disease had significantly higher vascular tortuosity than images without plus disease (P < 0.05), up to 7.0 disk diameters from the optic disk margin.

conclusionVascular tortuosity was higher peripherally than centrally, both in images with and without plus disease, suggesting that peripheral retinal features may be relevant for retinopathy of prematurity diagnosis.

Indexed as

Arteriovenous MalformationsFluorescein AngiographyGestational AgeHumansImage Processing, Computer-AssistedInfant, NewbornInfant, PrematureOptic DiskPhotographyRetinal ArteryRetinal VeinRetinopathy of Prematurity

Identifiers

PMID23538582
PMCPMC3759352
OpenAlexW2046980358

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Registered trials

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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.