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Ophthalmomyiasis externa caused by Oestrus ovis
Mahesh Kumar Shankar1, Seethalakshmi Krishnamurthy Diddapur, Shobha Dhruv Nadagir
1Department of Microbiology, Karnataka Institute of Medical Sciences (KIMS), Hubli, India. smahesh1973@yahoo.com
Journal of Laboratory Physicians
|August 28, 2012
Summary
Ophthalmomyiasis externa, an eye infection caused by Oestrus ovis larvae, occurred in a 50-year-old male. The 13 larvae were successfully removed from his conjunctival sac.
Area of Science:
- Ophthalmology
- Veterinary Entomology
Background:
- Ophthalmomyiasis externa is a rare condition involving fly larvae in the eye.
- Oestrus ovis, the sheep nasal bot fly, is a common cause of ocular myiasis.
Observation:
- A 50-year-old male presented with symptoms of foreign body sensation, pain, and redness in his left eye.
- Slit-lamp biomicroscopy revealed 13 tiny larvae within the conjunctival sac.
Findings:
- The larvae were mechanically removed under topical anesthesia.
- Microscopic examination identified the larvae as first-stage Oestrus ovis, confirming ophthalmomyiasis externa.
Implications:
- This case highlights the importance of considering ophthalmomyiasis externa in patients with ocular irritation and conjunctival findings.
- Prompt diagnosis and removal of Oestrus ovis larvae are crucial for preventing ocular complications.
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