[Dendritic keratitis following corneal foreign body].

Area of Science:

• Ophthalmology
• Virology
• Neuroscience

Background:

• Herpetic eye disease pathogenesis involves reactivation of latent herpes simplex virus (HSV) within the trigeminal ganglion.
• Trigeminal ganglion trauma or systemic alterations are known triggers for HSV reactivation and viral shedding.
• Peripheral stimuli generally have a limited impact on ganglionic HSV latency in humans.

Observation:

• A rare case of primary herpetic eye disease was documented.
• The suspected trigger was a small intrastromal corneal foreign body.
• This led to atypical corneal changes and prolonged healing difficulties.

Findings:

• The case suggests that localized corneal trauma, such as from a foreign body, can initiate herpetic keratitis.
• This challenges the notion that peripheral stimuli are less effective in destabilizing ganglionic latency.
• The unusual corneal alterations underscore the complex interplay between trauma and viral reactivation.

Implications:

• Corneal foreign bodies should be considered potential triggers for herpetic eye disease.
• Understanding diverse pathophysiologic pathways is crucial for managing herpetic keratitis.
• Further research may elucidate the mechanisms by which corneal trauma impacts viral latency.