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Habronemic blepharoconjunctivitis in horses.

W C Rebhun, E J Mirro, M E Georgi

Journal of the American Veterinary Medical Association

|September 1, 1981

Summary

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Habronemic blepharoconjunctivitis, an eye condition, presents with gritty conjunctival plaques and inflammation. Histology reveals eosinophils and collagenolysis, necessitating specific treatments like larvicides and ophthalmic drops.

Area of Science:

Ophthalmology
Veterinary Medicine
Parasitology

Background:

Habronemic blepharoconjunctivitis is an ocular condition affecting animals, often presenting with characteristic lesions.
Understanding the clinical and histological features is crucial for accurate diagnosis and effective management.

Observation:

Clinical signs include raised, yellow, gritty plaques on the palpebral and bulbar conjunctivae.
Associated findings in some cases were lid granulomas and blepharitis.

Findings:

Histological examination revealed the presence of mast cells, eosinophils, and collagenolysis.
A single-section biopsy could lead to a misdiagnosis of mastocytosis.

Implications:

Effective treatment involves larvicidal mixtures for lid lesions and organophosphate ophthalmic solutions with corticosteroids for conjunctivitis.

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Corneal damage prolongs healing due to contraindication of corticosteroids.