Diabetic Corneal Neuropathy: Pathogenic Mechanisms and Therapeutic Strategies

Area of Science:

• Ophthalmology
• Neurology
• Endocrinology

Background:

• Diabetes mellitus (DM) is a global health issue with serious complications like diabetic retinopathy, neuropathy, and nephropathy.
• Diabetic patients often experience reduced corneal nerve density and sensitivity, potentially leading to delayed wound healing and increased infections.
• These corneal nerve alterations, though linked to blindness, are under-recognized but may serve as early indicators of diabetic neuropathy.

Purpose of the Study:

• To review the relationship between corneal nerves and diabetic neuropathy.
• To elucidate the pathophysiological mechanisms of DM-induced corneal nerve fiber changes.
• To summarize therapeutic strategies for corneal complications in diabetic neuropathy.

Main Methods:

• Literature review focusing on studies examining corneal nerve changes in diabetes.
• Analysis of pathophysiological mechanisms linking DM to neuropathy and corneal alterations.
• Synthesis of current and emerging treatments for diabetic corneal complications.

Main Results:

• Corneal nerve fiber density and sensitivity are reduced in individuals with DM.
• These changes correlate with the progression of diabetic neuropathy.
• Delayed corneal wound healing and increased susceptibility to infections are observed.

Conclusions:

• Corneal nerve assessment offers a potential biomarker for early diabetic neuropathy detection.
• Understanding the mechanisms of nerve damage can guide preventative strategies.
• Therapeutic interventions should target nerve protection, regeneration, and wound healing in the diabetic cornea.