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Updated: Jul 6, 2026

Corneal Confocal Microscopy: A Novel Non-invasive Technique to Quantify Small Fibre Pathology in Peripheral Neuropathies

Corneal Confocal Microscopy: A Novel Non-invasive Technique to Quantify Small Fibre Pathology in Peripheral Neuropathies

Published on: January 3, 2011

Focal and multifocal diabetic neuropathies.

¹l'Hôpital de Bicêtre, Université Paris-Sud. gerard.said@bct.aphp.fr

Arquivos De Neuro-Psiquiatria

|March 18, 2008

Summary

Diabetic neuropathy, a common complication, presents as distal symmetrical or focal forms. Distal symmetrical diabetic neuropathy progresses, while focal types are often self-limiting.

Area of Science:

Neurology
Endocrinology
Diabetology

Background:

Diabetic neuropathy is a prevalent complication in industrialized nations, exhibiting diverse clinical presentations.
The distal symmetrical form, characterized by sensory and autonomic dysfunction, is most common and linked to progressive distal axonopathy.
Focal and multifocal neuropathies, including cranial nerve, limb, and truncal involvement, occur less frequently, particularly in older patients with long-standing diabetes.

Purpose of the Study:

To delineate the distinct clinical patterns and prognoses of diabetic neuropathy.
To differentiate between the progressive nature of distal symmetrical diabetic neuropathy and the self-limiting course of focal diabetic neuropathies.

Main Methods:

Clinical observation and characterization of diabetic neuropathy subtypes.

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Multifocal Electroretinograms

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Corneal Confocal Microscopy: A Novel Non-invasive Technique to Quantify Small Fibre Pathology in Peripheral Neuropathies

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Multifocal Electroretinograms

Multifocal Electroretinograms

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Review of patient data focusing on age, diabetes duration, and clinical manifestations.

Analysis of progression patterns and outcomes for different neuropathy types.

Main Results:

Distal symmetrical diabetic neuropathy typically progresses along a fiber-length dependent pattern, leading to foot complications, pain, and autonomic disturbances.
Focal diabetic neuropathies, often linked to inflammatory vasculopathy, tend to be self-limiting, though they may follow a relapsing course.
Distal symmetrical diabetic neuropathy shows no consistent improvement and either progresses or remains stable.

Conclusions:

Diabetic neuropathy encompasses distinct patterns with differing prognoses.
Understanding these patterns is crucial for patient management and predicting outcomes.
Focal diabetic neuropathies may indicate an inflammatory component, contrasting with the degenerative nature of the distal symmetrical form.