| case report: ophthalmomyiasis externa in dallas county, texas. | ophthalmomyiasis externa is an uncommon condition in north america. if not recognized and managed accordingly, it can be complicated by the potentially fatal condition ophthalmomyiasis interna. ophthalmomyiasis externa is mainly caused by the sheep bot fly oestrus ovis; thus, it is more common in farming communities. we report a case of ophthalmomyiasis externa in a young woman from dallas county, texas, who had no known history of contact with farm animals. | 2003 | 12556147 |