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Eye worms are the result of an infestation with a parasitic worm where the larva or the adult worm itself moves to the eye. Some of the parasitic worms or conditions associated with such an infestation include gnathostomiasis, loiasis, onchocerciasis, toxocariasis, and ocular cysticercosis.
Eye parasites are small microorganisms that can cause a parasitic infection in your eye. We’ll break down the three main types of parasites before diving into the types that can affect the eyes.
Eye worm infections, which are uncommon in the US, are caused when larva or adult worms enter your eyes. The condition can often be treated with topical eye drops or oral medications but sometimes surgical removal is required.
Some parasites can affect the eyes. Without treatment, this can lead to vision loss. Learn more about the types of eye parasites, their symptoms, and treatment options.
Loiasis (African eye worm) is a parasitic infection that can cause various symptoms, or may cause no symptoms at all. Finding a worm in your eye can be frightening, but the worm usually moves across your eye within a few hours and disappears.
An Oregon woman discovered she had live worms in her eye. The CDC says it is the first known case of cattle eye worms in humans
Symptoms of eye disease. The toxoplasma parasites may infect tissues of the inner eye. This can occur in people with healthy immune systems. But the disease is more serious in people with weakened immunity. An infection in the eye is called ocular toxoplasmosis. Symptoms may include: Eye pain. Poor vision.
While Oestrus ovis, or the sheep botfly, is the most common cause of human ophthalmomyiasis, several other offending species have also been identified, including the human bot fly (Dermatobia Hominis) latrine fly (Fannia), house fly (Musca domestica), and cattle botfly (Hypoderma).
Although eye worms can be scary, they last a short time—often just a few hours—and cause little damage to the eye. Less common symptoms include. In rare cases, people with loiasis may experience. Symptoms of loiasis range from none to itchy skin swellings and eye worms.
Spirurid nematodes in the genus Thelazia are primarily veterinary parasites, but may occasionally infect humans. The majority of zoonotic infections involve T. callipaeda (the Oriental eye worm). T. californiensis (the California eye worm) and T. gulosa (the cattle eyeworm) are less common causative agents.