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Ocular larva migrans (OLM), also known as ocular toxocariasis, is the ocular form of larva migrans syndrome.It occurs when roundworm larvae invade the human eye. OLM infections in humans are caused by the larvae of Toxocara canis (dog roundworm), Toxocara cati (feline roundworm), Ascaris suum (large roundworm of pig), or Baylisascaris procyonis (raccoon roundworm).
Thelazia callipaeda is a parasitic nematode, and the most common cause of thelaziasis (or eyeworm infestation) in humans, dogs and cats. [1] It was first discovered in the eyes of a dog in China in 1910. [2] By 2000, over 250 human cases had been reported in the medical literature. [3]
Thelazia callipaeda eye worm is a nematode transmitted by drosophilid flies not only primarily to carnivores and lagomorphs but also to humans. Only a few cases have been reported in Europe (Italy, France, and Portugal). Here, we report the first eye infection in a German patient. [9] Thelazia gulosa
Thelaziasis is the term for infestation with parasitic nematodes of the genus Thelazia.The adults of all Thelazia species discovered so far inhabit the eyes and associated tissues (such as eyelids, tear ducts, etc.) of various mammal and bird hosts, including humans. [2]
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Dogs and foxes are the reservoir for Toxocara canis, but puppies and cubs pose the greatest risk of spreading the infection to humans. [5] Infection in most adult dogs is characterized by encysted second-stage larvae. However, these larvae can reactivate in pregnant females and cross the placental barrier to infect the pups.
Primary glaucomas occur in the absence of other eye disease, and are therefore presumed to be genetic in origin. [1] The most common type of glaucoma in dogs is primary angle-closure glaucoma (PACG). [1] The least common type of glaucoma in dogs is primary open-angle glaucoma (POAG), although this is the most common type that affects humans. [1]
6. Worms and other parasitic infections. With heavy worm burdens or certain parasitic infections, dogs can vomit. You may see worms in the vomit, but an absence of worms doesn’t mean parasites ...