Blast injury: Impact to the cornea

Area of Science:

• Ophthalmology
• Neuroscience
• Military Medicine

Background:

• Visual disorders and corneal pathologies are prevalent following mild traumatic brain injury (mTBI) and blast exposure.
• Blast-associated injuries significantly impact military personnel and veterans, leading to substantial vision loss costs.
• The specific visual consequences of blast-mediated TBI remain incompletely understood.

Purpose of the Study:

• To review current advancements in understanding blast-induced corneal injury.
• To elucidate novel therapeutic targets for blast-associated ocular disorders.
• To discuss the impact of blast exposure on corneal health and visual function.

Main Methods:

• Literature review of studies on blast exposure, TBI, and ocular pathologies.
• Analysis of reported corneal injuries in military personnel and veterans.
• Examination of immune responses and pathological changes in the cornea post-blast.

Main Results:

• Approximately 25% of blast-exposed veterans report corneal injuries.
• Blast exposure induces various corneal abnormalities, including edema, opacity, epithelial damage, and endothelial dysfunction.
• Immune responses significantly exacerbate blast-induced ocular damage, contributing to conditions like dry eye and pain.

Conclusions:

• Blast exposure is a significant cause of corneal disorders and visual impairment in military populations.
• Early clinical visual and ocular examinations are essential for individuals exposed to blasts causing TBI.
• Further research is needed to fully understand blast-induced corneal pathology and develop effective therapeutic strategies.