A case report of ocular toxocariasis
Introduction (Case Reports Only) We present a case report of an 18-year-old male who was first diagnosed with ocular toxocariasis (OT) in 2010 and experienced two recurrences of the disease since 2019. Case Description (Case Reports Only) An 18-year-old male presented with complaints of decreased vision in his right eye. His medical history revealed that he had been diagnosed with OT 9 years ago, and at that time, a blood test had shown a positive result for serum anti-Toxocara IgG. After treatment, the patient's symptoms had improved, and a focal, raised whitish retinal lesion in the right eye had disappeared. However, in 2019, examination revealed a decrease in visual acuity (VA) (Snellen chart) to 0.3 in the right eye. Slit lamp examination revealed cells in the anterior chamber and vitreous. Fundus examination revealed a swollen optic disc and a whitish, focally raised lesion with a swollen inferotemporal arcade. A blood test revealed eosinophilia, negative anti-Toxocara IgG (tested 6 days after recurrence), and anti-Toxocara IgM was not determined. The diagnosis OT was made based on the patient's history and clinical presentation. The patient was treated with albendazole 400 mg twice daily and topical eye drops for 5 days. All of the above findings improved significantly, and best corrected visual acuity (BCVA) increased to 0.8 within 3 months. Two years later, the patient's vision in the right eye deteriorated after infection COVID -19. Clinical examination revealed a VA of 0.4, and fundus examination revealed an active focal lesion, and systemic treatment was not prescribed at this time. Improvement in the condition was observed, and within 2 months, the BCVA improved to 1.0. Summary (Case Reports Only) An 18-year-old patient had two recurrences of OT in two years, but his VA fully recovered. Conclusions Monitor patients closely after treatment as parasites can remain in the body for years and cause recurrences.