Thelaziasis

Thelaziasis is a parasitic disease caused by the nematode species of the genus Thelazia. The disease is transmitted to humans and animals through the bite of various species of flies, primarily the face fly and the fruit fly. Thelaziasis is most commonly found in Asia, Europe, and North America.

Etiology

Thelaziasis is caused by the nematode species of the genus Thelazia. The most common species that infect humans are Thelazia callipaeda and Thelazia californiensis. These nematodes are transmitted to the host through the bite of an infected fly. The larvae are deposited in the eye, where they mature into adult worms.

Symptoms

The symptoms of thelaziasis can vary depending on the number of worms present in the eye. In mild cases, the patient may experience irritation, redness, and tearing. In severe cases, the patient may suffer from keratitis, corneal ulcer, and even blindness.

Diagnosis

Diagnosis of thelaziasis is made by identifying the worms in the eye. This can be done through a simple eye examination. In some cases, the worms may need to be removed for identification.

Treatment

Treatment for thelaziasis involves the removal of the worms from the eye. This can be done manually or through the use of anti-parasitic drugs. In severe cases, surgery may be required.

Prevention

Prevention of thelaziasis involves controlling the fly population and avoiding contact with flies. This can be done through the use of insect repellents and by keeping the eyes covered when in areas with a high fly population.

See also

• Parasitic diseases
• Nematode infections
• Eye diseases

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