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Case report: ophthalmomyiasis externa in Dallas County, Texas
Ellen Sigauke1, Walter E Beebe, Rita M Gander
1Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9073, USA.
The American Journal of Tropical Medicine and Hygiene
|January 31, 2003
Summary
Ophthalmomyiasis externa, an eye infection caused by fly larvae, is rare in North America. This case highlights its occurrence even without direct farm animal contact, emphasizing the need for awareness.
Area of Science:
- Ophthalmology
- Medical Entomology
Background:
- Ophthalmomyiasis externa is an uncommon ocular infestation by fly larvae.
- It can progress to the severe and potentially fatal ophthalmomyiasis interna if untreated.
- The sheep bot fly (Oestrus ovis) is the primary causative agent, typically affecting individuals in agricultural settings.
Observation:
- A case of ophthalmomyiasis externa occurred in a young woman in Dallas County, Texas.
- The patient had no reported history of contact with farm animals or sheep.
Findings:
- This case demonstrates ophthalmomyiasis externa in a non-farming community.
- It suggests potential alternative transmission routes or environmental exposures beyond direct contact with sheep.
Implications:
- Increased clinical suspicion for ophthalmomyiasis externa is warranted, even in non-traditional settings.
- Further research into the epidemiology and transmission vectors of Oestrus ovis in North America is needed.
- Prompt diagnosis and management are crucial to prevent progression to internal ophthalmomyiasis.