Thelazia callipaeda

Thelazia callipaeda
Male
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Nematoda
Class: Chromadorea
Order: Rhabditida
Suborder: Spirurida
Infraorder: Spiruromorpha
Superfamily: Thelazioidea
Family: Thelaziidae
Genus: Thelazia
Species:
T. callipaeda
Binomial name
Thelazia callipaeda
Railliet and Henry, 1910

Thelazia callipaeda is a parasitic nematode, and the most common cause of thelaziasis (or eyeworm infestation) in humans, dogs and cats. It was first discovered in the eyes of a dog in China in 1910. By 2000, over 250 human cases had been reported in the medical literature.