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Related Experiment Video

Updated: May 17, 2026

Intravitreous Injection for Establishing Ocular Diseases Model

Intravitreous Injection for Establishing Ocular Diseases Model

Published on: October 1, 2007

External ophthalmomyiasis: a case series.

I Carrillo¹, L Zarratea, M J Suárez

¹Servicio de Oftalmología, Hospital Universitario Doce de Octubre, Madrid, Spain. isabelcarrilloarroyo@yahoo.es

International Ophthalmology

|October 20, 2012

Summary

This summary is machine-generated.

Ophthalmomyiasis, caused by the sheep botfly (Oestrus ovis), is a common eye condition in warm regions. Larvae on the conjunctiva require manual removal for treatment.

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Area of Science:

Veterinary Ophthalmology
Medical Entomology
Parasitology

Background:

Oestrus ovis, the sheep botfly, is a known cause of ophthalmomyiasis, particularly in warmer climates.
Ophthalmomyiasis is an ocular infestation by fly larvae, presenting as an external or internal condition.

Observation:

Symptoms include foreign body sensation and tearing, indicative of conjunctival irritation.
First-stage larvae of Oestrus ovis are typically observed on the conjunctiva.
Manual extraction of larvae using forceps is the standard treatment for external ophthalmomyiasis.

Findings:

Larval development beyond the first stage is uncommon in healthy human hosts.
Oestrus ovis larvae can potentially penetrate the ocular globe, leading to internal ophthalmomyiasis.
While prevalent in rural settings, external ophthalmomyiasis can also occur in urban environments.

Implications:

Prompt diagnosis and larval removal are crucial to prevent complications like internal ophthalmomyiasis.
Understanding the transmission dynamics of Oestrus ovis is important for public health in endemic areas.
This condition highlights the zoonotic potential of certain arthropods and the importance of veterinary-parasitological surveillance.