Supplementary Material for: Ophthalmomyiasis Externa: A Case Report in a Tertiary Care Center in Riyadh, Saudi Arabia

Introduction: Ophthalmomyiasis externa, which is caused by Oestrus ovis larvae, is a parasitic eye infestation that is prevalent in tropical and subtropical regions. It occurs in rural settings and is associated with risk factors, such as poor sanitation and underlying health conditions. Reports on this disease in Saudi Arabia are rare.
Case Presentation: A 30-year-old man from a rural area in Riyadh presented with severe left eye irritation and redness after being hit by an insect. Examination revealed seven motile larvae, which were identified as O. ovis, on the conjunctiva. The larvae were mechanically removed, and the patient was treated with topical antibiotics. On follow-up, four additional larvae were found and removed. Symptoms resolved completely, with no further larvae detected on subsequent follow-up.
Discussion: Ophthalmomyiasis can be classified as externa, interna anterior, or interna posterior. Prompt diagnosis and treatment are crucial to prevent complications. Mechanical removal of larvae and topical antibiotics are effective treatments.
Conclusions: Thorough history and examination are essential for the diagnosis of ophthalmomyiasis, especially in rural areas. Early detection and intervention are vital to prevent serious complications. This case highlighted the importance of awareness among healthcare providers.