Thelazia worms in the eyes of British cattle.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology*; D005123:Eye / Q000469:parasitology; D005128:Eye Diseases / Q000469:parasitology / Q000662:veterinary*; D009349:Nematode Infections / Q000469:parasitology / Q000662:veterinary*; D013802:Thelazioidea