Thelazia callipaeda

Thelazia callipaeda is a species of parasite that is commonly referred to as the "oriental eye worm". It is a nematode that is known to infect a variety of hosts, including humans, dogs, cats, and various wild animals. The parasite is transmitted by the fruit fly and is most commonly found in Asia and Europe.

Life Cycle

The life cycle of Thelazia callipaeda begins when a female worm lays her eggs in the tear ducts of the host. The eggs hatch into larvae, which are then ingested by a fruit fly. Inside the fly, the larvae develop into infective stage larvae. When the fly feeds on the tears of another host, the larvae are transferred and the cycle begins again.

Symptoms

In humans, infection with Thelazia callipaeda can cause a range of symptoms, including conjunctivitis, corneal ulceration, and even blindness if left untreated. In animals, symptoms can include conjunctivitis, excessive tearing, and corneal damage.

Treatment

Treatment for Thelazia callipaeda infection typically involves the physical removal of the worms from the eye, followed by treatment with antiparasitic drugs. In severe cases, surgery may be required to remove the worms.

Prevention

Prevention of Thelazia callipaeda infection involves avoiding contact with fruit flies, particularly in areas where the parasite is known to be prevalent. Regular eye examinations can also help to detect the presence of the worms early, before they cause significant damage.

See Also

• Parasitic worms
• Conjunctivitis
• Corneal ulceration

Thelazia callipaeda Resources
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