The findings observed in a 25-year-old female with external ophthalmomyiasis are described. She had visited South Africa for a short time. In contrast to the more severe intraocular form of this disease, which may produce a panophthalmitis, the external form is characterized by an acute conjunctivitis containing the Oestridae larvae in the subconjunctival tissues. We were able to remove the organism completely with forceps. The role of the Dipterae larvae in the pathogenesis of Ophthalmomyiasis is discussed. This case illustrates that this disease should be suspected in conjunctivitis found in individuals who have been born exposed in tropical regions. A careful examination of the conjunctiva is necessary in order to assure that any organism that may be present is not overlooked.