Eye Worms: Not Just for Cattle

An Oregon woman felt an irritant in her left eye and a week later pulled out a translucent worm; after 2 weeks of treatment, doctors pulled out a couple dozen more. Her case represents the first-ever human instance of Thelazia gulosa, a type of eye worm spread by “face flies” that that feed off tears.

Once considered a cattle-only condition, her case makes Thelazia gulosa the 3rd species of eye worm that infects humans worldwide.

Meanwhile, another study found that a species of fruit flies spreading Thelazia callipaeda eye worms across Europe, can also be found in upstate New York.

American Journal of Tropical Medicine and Hygiene

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