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Related Experiment Video

Updated: Jun 20, 2026

Microfocus X-ray CT (microCT) Imaging of Actinia equina (Cnidaria), Harmothoe sp. (Annelida), and Xenoturbella japonica (Xenacoelomorpha)

Microfocus X-ray CT (microCT) Imaging of Actinia equina (Cnidaria), Harmothoe sp. (Annelida), and Xenoturbella japonica (Xenacoelomorpha)

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An eye-catching acanthocephalan.

T Haustein¹, M Lawes, E Harris

¹Hospital for Tropical Diseases, London, UK.

Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases

|August 20, 2009

Summary

This summary is machine-generated.

Acanthocephala, or thorny-headed worms, rarely infect humans, typically in the gastrointestinal tract. This report details the first known case of an acanthocephalan found in a human eye.

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Techniques for Investigating the Anatomy of the Ant Visual System

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Published on: November 27, 2017

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Microfocus X-ray CT (microCT) Imaging of Actinia equina (Cnidaria), Harmothoe sp. (Annelida), and Xenoturbella japonica (Xenacoelomorpha)

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Published on: August 6, 2019

Techniques for Investigating the Anatomy of the Ant Visual System

Techniques for Investigating the Anatomy of the Ant Visual System

Published on: November 27, 2017

Area of Science:

Veterinary parasitology
Human infectious diseases
Ophthalmology

Background:

Acanthocephala are endoparasitic worms found in vertebrates.
Human infections are rare and usually confined to the gastrointestinal tract.
The morphology of Acanthocephala includes a retractable proboscis with hooks.

Observation:

An immature acanthocephalan was retrieved from a patient's eye.
This represents a highly unusual presentation of acanthocephalan infection.
The location of the parasite is outside the typical gastrointestinal tract.

Findings:

The study documents the first ocular acanthocephalan infection in a human.
Identification of the parasite confirmed it as an immature acanthocephalan.
The case highlights the potential for aberrant parasite migration.

Implications:

This finding expands the known spectrum of human Acanthocephala infections.
Ocular Acanthocephala infections may require specific diagnostic and treatment approaches.
Further research is needed to understand the mechanisms of ocular invasion by Acanthocephala.