 He was then treated with mebendazole (100 mg twice a day, for 14 days), and at the end of his treatment, his visual impairment was the only symptom remaining.After a week, with no further treatment, his vision improved and acuity was increased to 8/10 in the left eye.While ocular symptoms occur quite frequently in symptomatic "M. perstans" infection, intraocular localization had not been described prior to this study.