Sheep botfly: ophthalmomyiasis externa.
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Sheep botfly (Oestrus ovis) conjunctival infestation is rare in North America but is common in other parts of the world. The author treated 30 patients with this type of conjunctivitis in Jerusalem in 1981 and 1982. The conjunctivitis may vary from mild to severe (pseudo-orbital cellulitis). Features of the conjunctivitis include pale edema, linear superficial punctate keratopathy and the presence of larvae in the conjunctival sac. Conjunctival scrapings revealed a preponderance of polymorphonucleocytes.
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