The absence of vitreous inflammation: one more challenge in diagnosing toxoplasma papillitis

Toxoplasma is a leading cause of posterior uveitis in immunocompetent patients manifesting as a focal posterior retinochoroiditis. The clinical diagnosis of ocular toxoplasmosis is usually straightforward. There is typically a fluffy white retinal lesion which may lie adjacent to a pigmented chorioretinal scar and a prominent vitreous, or additionally, anterior chamber cellular reaction. Several unusual presentations in ocular toxoplasmosis have been reported, including: papillitis, neuroretinitis, retrobulbar neuritis, retinal detachment and macular oedema. This is a case of presumed primary toxoplasma papillitis in a 14-year-old child with complete absence of vitritis at presentation that made the diagnosis challenging. This evolved into neuroretinitis that resolved upon introducing antitoxoplasma antibiotics.