Ocular Toxocariasis Presenting as Endophthalmitis in a Young Adult Intravenous Drug User.

Owing to a variety of presentations, ocular toxocariasis can be challenging to diagnose. In a patient with a history of intravenous drug use where fungal and bacterial organisms are more common causes of endophthalmitis, it is important to have a wide differential of causative organisms, particularly in the context of negative culture results and a worsening clinical examination.