Definition of eye worm in US English:

eye worm

noun

  • Either of two parasitic nematode worms which affect the eyes of mammals.

    a nematode that occurs in the region of the eyelid and tear duct, found chiefly in hoofed mammals (genus "Thelazia", class "Phasmida")

    a filarial worm of equatorial Africa, infesting humans and other primates, causing loiasis and sometimes passing across the cornea ("Loa loa", class "Phasmida")

    • ‘An eye worm of the genus Thelazia was first reported in the United States in 1930.’
    • ‘The eye worm lays eggs on the surface of the eye.’
    • ‘The nematode eye worm, Thelazia sp. is transmitted to horses and cattle by the face fly.’