A patient with chronic conjunctivitis was found to have a parasitic nematode infection of the conjunctiva. The parasite was found within the cul-de-sac of the conjunctiva, entirely motile. The treatment of the conjunctivitis was simple removal of the organism, and periodic follow up.
Knierim R, Jack MK. Conjunctivitis due to Thelazia californiensis. Arch Ophthalmol. 1975;93(7):522-523. doi:10.1001/archopht.1975.01010020538011