External ophthalmomyiasis is an infestation of conjunctiva with larvae or maggots of certain lies. Oestrus ovis is the most common cause of human ophthalmomyiasis. The case of a 16-yearold female is described, who presented with foreign body sensation, pain, and redness in the left eye. Slit-lamp biomicroscopy revealed 32 tiny larvae crawling around the conjunctival sac. The larvae were mechanically removed under topical anesthesia, and identiied under a light microscope as irst-stage larvae of O. ovis causing external ophthalmomyiasis. She was successfully treated with topical tobacco juice. Follow-up examination of these cases is recommended to avoid possible complications.