Ocular toxoplasmosis is one of the most common causes of posterior uveitis caused by an intracellular parasite Toxoplasma gondii (Holland 2003). Since the 1950s, ocular toxoplasmosis has been recognized as a form of inflammatory eye disease that follows the infection with the parasite, T. gondii (Wilder 1952). T. gondii is an ubiquitous obligate intracellular parasite, which infects both humans and warm-blooded animals as a zoonotic pathogen widespread in nature (Holland 2003). It is estimated that approximately one third of the world’s population is chronically infected with T. gondii (Subauste et al. 2011). Ocular toxoplasmosis represents 50–85% of the posterior uveitis case in Brazil and about 25% of cases in the United States (Jones et al. 2001).