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Related Experiment Video

Updated: Jun 10, 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

Mapping the entire human corneal nerve architecture.

Jiucheng He¹, Nicolas G Bazan, Haydee E P Bazan

¹Neuroscience Center of Excellence and Department of Ophthalmology, Louisiana State University Health Sciences Center, School of Medicine, New Orleans, LA 70112, USA.

Experimental Eye Research

|July 24, 2010

Summary

Aging significantly reduces human corneal nerve density, particularly in older individuals, impacting central epithelial nerve terminals. This study maps corneal nerve architecture to understand aging and gender effects.

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Three Strategies to Induce Neurotrophic Keratitis and Nerve Regeneration in Murine Cornea

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Published on: December 8, 2023

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Last Updated: Jun 10, 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

Three Strategies to Induce Neurotrophic Keratitis and Nerve Regeneration in Murine Cornea

Three Strategies to Induce Neurotrophic Keratitis and Nerve Regeneration in Murine Cornea

Published on: December 8, 2023

Area of Science:

Ophthalmology
Neuroscience
Anatomy

Background:

Human corneal nerve architecture is complex and its age-related changes are not fully understood.
Previous studies lacked a comprehensive 3D mapping approach for detailed analysis.

Purpose of the Study:

To develop a 3D mapping technique for assessing corneal epithelial nerve density.
To investigate the influence of aging and gender on human corneal nerve architecture.

Main Methods:

Developed a novel 3D mapping approach using fluorescence microscopy on stained human corneal tissue.
Acquired and merged consecutive images for complete epithelial and stromal nerve visualization.
Analyzed nerve density across different corneal quadrants and regions.

Main Results:

Epithelial nerve density and terminal numbers were higher in the corneal center than the periphery.
No significant differences in nerve density were found between genders.
A progressive reduction in nerve density was observed with aging, especially in donors aged 70+.
Aging led to decreased central epithelial nerve terminals and increased sub-basal anomalies.

Conclusions:

The developed 3D mapping technique provides an unprecedented complete view of human corneal nerve architecture.
Aging negatively impacts corneal innervation, reducing nerve terminals and increasing anomalies in older adults.
Corneal nerve architecture shows distinct patterns in central vs. peripheral regions, independent of gender.