• Xiaoli Lv and Pingping Yu.
• Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang Shanghai University of Traditional Chinese Medicine, Shanghai, China.
• Medicine (Baltimore). 2018 Jun 1; 97 (26): e11231e11231.

RationaleToxoplasma gondii is distributed worldwide, infecting a large population. It can cause focal necrotic retinitis or retinochoroiditis in the human eyes and is one of the most common causes of posterior uveitis.Patient ConcernsA 68-year-old patient with normal immunity was complained about blurred vision and black shadow in the right eye for 1 week.DiagnosesCombined Yellow-and-white bulged lesions in the fundus of the right eye with the Goldmann-Witmer coefficient = 2 and based on the serological indicators, we considered the diagnosis of T. gondii infection-induced retinochondritis.InterventionsAcetylspiramycin 0.4 QID × 3 weeks, concussive 20 days treatment after 3 days, for a total of 3 months, prednisone 20 mg/day with a weekly reduction of 5 mg for 1 month.OutcomesAfter oral acetylspiramycin, topical and systemic corticosteroids for 3 months, the retinal lesions were scarred, and inflammation of the anterior chamber and vitreum disappeared. After a 9-month follow-up, the visual acuity was 0.6, and no active lesions were observed in the fundus.LessonsThe immunocompetent elderly who are in contact with domestic cats may have an opportunistic infection with toxoplasmosis leading to primary retinochoroiditis. Prompt diagnosis and effective treatment can get a good clinical prognosis.

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