Evidence map›Paper›PMID 34806115›Full record

ArticleDiabetologia2022

Artificial intelligence utilising corneal confocal microscopy for the diagnosis of peripheral neuropathy in diabetes mellitus and prediabetes.

Frank G Preston, Yanda Meng, Jamie Burgess, Maryam Ferdousi, Shazli Azmi, Ioannis N Petropoulos, Stephen Kaye, Rayaz A Malik, Yalin Zheng, Uazman Alam

Open access · hybridAbstract read
In one paragraph

Article in Diabetologia, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
8.6field-weighted citation impact, top 1% 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

44 citing papers in PubMed, 66 citations in OpenAlex.

  1. Review
  2. Review
  3. A Review of the Use of Artificial Intelligence in Ophthalmology Imaging: Approximation to Ocular Histopathology.APMIS : acta pathologica, microbiologica, et immunologica Scandinavica · 2026
    Review
  4. Review
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  6. Algor-Ethics in Diabetes Care: Mapping the Route.Diabetes/metabolism research and reviews · 2026
    Review
  7. Article
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  11. Article
  12. Review
  13. Observational
  14. Article
  15. Modern Technologies inSovremennye tekhnologii v meditsine · 2025
    Review
  16. Artificial Intelligence to Diagnose Complications of Diabetes.Journal of diabetes science and technology · 2025
    Review
  17. Review
  18. Review
  19. Review
  20. Observational
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

10 authors at 3 institutions in 2 countries.

Frank G PrestonDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.ORCID 0000-0002-3953-331X
Yanda MengDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.ORCID 0000-0001-7344-2174
Jamie BurgessInstitute of Life Course and Medical Sciences and the Pain Research Institute, University of Liverpool and Liverpool University Hospital NHS Foundation Trust, Liverpool, UK.
Maryam FerdousiInstitute of Cardiovascular Science, University of Manchester and Manchester Diabetes Centre, Manchester Foundation Trust, Manchester, UK.
Shazli AzmiInstitute of Cardiovascular Science, University of Manchester and Manchester Diabetes Centre, Manchester Foundation Trust, Manchester, UK.
Ioannis N PetropoulosWeill Cornell Medicine - Qatar, Doha, Qatar.
Stephen KayeDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.
Rayaz A MalikWeill Cornell Medicine - Qatar, Doha, Qatar.
Yalin ZhengDepartment of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK. yalin.zheng@liverpool.ac.uk.
Uazman AlamInstitute of Life Course and Medical Sciences and the Pain Research Institute, University of Liverpool and Liverpool University Hospital NHS Foundation Trust, Liverpool, UK. ualam@liverpool.ac.uk.ORCID 0000-0002-3190-1122
University of Liverpool · GBUniversity of Manchester · GBWeill Cornell Medical College in Qatar · QA

Funding

Multinational Collaborative Evaluation of Corneal Confocal Microscopy as a Surrogate Endpoint for the Identification and Prediction of Diabetic Neuropathy in Type 1 DiabetesDP3DK104386 · NIDDK · SINAI HEALTH SYSTEM · PI BRIL, VERA, EFRON, NATHAN · 2014 to 2014
$1.1M
NIDDK NIH HHS DP3 DK104386
6 · The paper itself

Abstract

aims/hypothesisWe aimed to develop an artificial intelligence (AI)-based deep learning algorithm (DLA) applying attribution methods without image segmentation to corneal confocal microscopy images and to accurately classify peripheral neuropathy (or lack of).

methodsThe AI-based DLA utilised convolutional neural networks with data augmentation to increase the algorithm's generalisability. The algorithm was trained using a high-end graphics processor for 300 epochs on 329 corneal nerve images and tested on 40 images (1 image/participant). Participants consisted of healthy volunteer (HV) participants (n = 90) and participants with type 1 diabetes (n = 88), type 2 diabetes (n = 141) and prediabetes (n = 50) (defined as impaired fasting glucose, impaired glucose tolerance or a combination of both), and were classified into HV, those without neuropathy (PN-) (n = 149) and those with neuropathy (PN+) (n = 130). For the AI-based DLA, a modified residual neural network called ResNet-50 was developed and used to extract features from images and perform classification. The algorithm was tested on 40 participants (15 HV, 13 PN-, 12 PN+). Attribution methods gradient-weighted class activation mapping (Grad-CAM), Guided Grad-CAM and occlusion sensitivity displayed the areas within the image that had the greatest impact on the decision of the algorithm.

resultsThe results were as follows: HV: recall of 1.0 (95% CI 1.0, 1.0), precision of 0.83 (95% CI 0.65, 1.0), F CONCLUSIONS/

interpretationWe demonstrate promising results in the rapid classification of peripheral neuropathy using a single corneal image. A large-scale multicentre validation study is required to assess the utility of AI-based DLA in screening and diagnostic programmes for diabetic neuropathy.

Indexed as

Diabetes Mellitus, Type 2Diabetic NeuropathiesPrediabetic StateArtificial IntelligenceHumansMicroscopy, ConfocalArtificial intelligenceConvolutional neural networkCorneal confocal microscopyDeep learning algorithmDiabetic neuropathyImage segmentationOphthalmic imagingSmall nerve fibres

Identifiers

PMID34806115
PMCPMC8803718
OpenAlexW3215647506

What OpenQuestion holds

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LicenceCC BY
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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.