The patient was a 66-year-old female. Because of red and astringent discomfort in both eyes for more than 1 month, he went to Rongcheng Eye Hospital in Shandong Province. No prior pet contact history. Ophthalmological examination: mixed conjunctiva congestion of the right eye, a small amount of filamentous yellow-white secretion in the conjunctival sac, and no obvious abnormalities in the cornea and intraocular structures; When using a cotton swab to remove the secretion of the conjunctival sac, it was found that there was a white worm peristalsis at the fornical conjunctiva above the nose of the right eye, and the abdomen was brown (essence video image;Quintessence Picture 1,2)。 Please consult the microbiology room of Beijing Institute of Ophthalmology. Clinical diagnosis: conjunctival larvae of M. ovina in the right eye.