Corneal confocal microscopy for the diagnosis of diabetic peripheral neuropathy: A systematic review and meta‐analysis

ABSTRACT Introduction Corneal confocal microscopy (CCM) is a rapid non‐invasive ophthalmic imaging technique that identifies corneal nerve fiber damage. Small studies suggest that CCM could be used to assess patients with diabetic peripheral neuropathy (DPN). Aim To undertake a systematic review and...

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Veröffentlicht in:Journal of diabetes investigation Jg. 13; H. 1; S. 134 - 147
Hauptverfasser: Gad, Hoda, Petropoulos, Ioannis N, Khan, Adnan, Ponirakis, Georgios, MacDonald, Ross, Alam, Uazman, Malik, Rayaz A
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Japan John Wiley & Sons, Inc 01.01.2022
John Wiley and Sons Inc
Wiley
Schlagworte:
Adult
Aged
Bias
CCM
Confocal microscopy
Cornea
Cornea - diagnostic imaging
Cornea - innervation
Diabetes
Diabetes mellitus
Diabetic Neuropathies - diagnosis
Diabetic neuropathy
Diabetic peripheral neuropathy
Diagnosis
Female
Humans
Male
Meta-analysis
Microscopy
Microscopy, Confocal - methods
Microscopy, Confocal - statistics & numerical data
Middle Aged
Nerve Fibers - pathology
Original
Patients
Peripheral neuropathy
Predictive Value of Tests
Reproducibility of Results
Software
Subject heading schemes
Systematic review
United Kingdom > UK
Canada
Japan
Diabetic peripheral neuropathy
CCM
Diagnosis
ISSN:2040-1116, 2040-1124, 2040-1124
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Zusammenfassung:ABSTRACT Introduction Corneal confocal microscopy (CCM) is a rapid non‐invasive ophthalmic imaging technique that identifies corneal nerve fiber damage. Small studies suggest that CCM could be used to assess patients with diabetic peripheral neuropathy (DPN). Aim To undertake a systematic review and meta‐analysis assessing the diagnostic utility of CCM for sub‐clinical DPN (DPN−) and established DPN (DPN+). Data sources Databases (PubMed, Embase, Central, ProQuest) were searched for studies using CCM in patients with diabetes up to April 2020. Study selection Studies were included if they reported on at least one CCM parameter in patients with diabetes. Data extraction Corneal nerve fiber density (CNFD), corneal nerve branch density (CNBD), corneal nerve fiber length (CNFL), and inferior whorl length (IWL) were compared between patients with diabetes with and without DPN and controls. Meta‐analysis was undertaken using RevMan V.5.3. Data synthesis Thirty‐eight studies including ~4,000 participants were included in this meta‐analysis. There were significant reductions in CNFD, CNBD, CNFL, and IWL in DPN− vs controls (P < 0.00001), DPN+ vs controls (P < 0.00001), and DPN+ vs DPN− (P < 0.00001). Conclusion This systematic review and meta‐analysis shows that CCM detects small nerve fiber loss in subclinical and clinical DPN and concludes that CCM has good diagnostic utility in DPN. This meta‐analysis of ~4,000 participants shows that corneal confocal microscopy is a rapid objective ophthalmic technique for the assessment of subclinical and clinical diabetic neuropathy. Forest plot of corneal nerve fiber length (CNFL) in patients with diabetic peripheral neuropathy (DPN+) and without diabetic peripheral neuropathy (DNP−).
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ISSN:2040-1116
2040-1124
2040-1124
DOI:10.1111/jdi.13643