External ophthalmomyiasis: a case report.

Many dipteran flies can cause ophthalmomyiasis, a potentially severe and vision threatening disease. We report a case of ophthalomyiasis caused by Oestrus ovis. Larvae of Oestrus ovis are confined to the surface of the eye and cause external ophthalmomyiasis. The presentation is similar to a viral conjunctivitis, with tearing, itching, hyperaemia and foreign body sensation. The disease is self-limiting and removal of the larvae is the most effective therapy. Identification of the species is important to estimate the risk of penetration of the globe.