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Unusual Toxoplasmic Chorioretinitis in Advanced Age: A Diagnostic Problem

Purpose: To raise awareness regarding presentation of toxoplasmic chorioretinitis late in life, and to discuss the invasive diagnostic options. Patients/Methods: Case report. Results: A 62-year-old patient presenting with posterior vitritis and a focus of retinitis was misdiagnosed and treated with antivirals and corticosteroids. Relapse after initial stabilization justified a vitreous tap for culture and DNA detection of a number of infectious agents, leading to the correct diagnosis of T.gondii infection. Conclusions: Ocular sampling may be necessary to secure timely diagnosis and treatment of atypical retinitis. Acquired ocular toxoplasmosis may be under-recognized as a cause of infectious posterior uveitis and caution should be applied when administering steroids without a definite diagnosis.