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[Eye injuries caused by vesicatory insects].

C Rivaud¹, A Gerault, E Frau

¹Service d'ophtalmologie, Hôpital Principal, Dakar.

Journal Francais D'Ophtalmologie

|January 1, 1990

Summary

Ocular injuries from vesicatory insects, like cantharidin, cause severe corneal damage and vision loss. Prompt treatment like keratoplasty may help remove the toxin, but prevention is key.

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Area of Science:

Ophthalmology
Toxicology
Entomology

Background:

Vesicatory insects contain cantharidin, a toxin with severe corrosive properties.
Ocular injuries from these insects are rare and poorly documented in scientific literature.

Observation:

Cantharidin exposure leads to progressive corneal necrosis, potentially causing ocular perforation within 30 days.
The toxin's persistence causes prolonged ocular damage, affecting the crystalline lens and inducing severe inflammation with refractory hypertension.

Findings:

No specific antidote exists for cantharidin ocular toxicity.
Emergency penetrating keratoplasty and anterior chamber lavage are proposed treatments to eliminate the toxin.
Less severe injuries observed in practice may result from exposure to insect debris or secretions.

Implications:

Highlights the potential for severe ocular morbidity from vesicatory insect exposure.
Emphasizes the importance of preventative measures against insect-related eye injuries.
Suggests novel therapeutic approaches for managing cantharidin-induced ocular damage.

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