[Toxoplasma uveitis in a patient with ankylosing spondylitis].

In this paper, a posterior uveitis case was reported in a patient who was being followed and under treatment for Ankylosing Spondylitis. Toxoplasma antibodies were investigated and anti-toxoplasma IgG was positive. Systematic treatment (Sulfamethoxazole/Trimethoprim and Clindamycin) was started. Despite medical treatment, reduction in visual acuity and development of dense membranous condensation in vitreous occurred. Surgical vitrectomy was performed. When posterior uveitis develops in patients who undergo immunosuppressive treatment, toxoplasma is among the first infectious agents that we should consider. A delay in diagnosis and treatment may result in failure in obtaining the desired outcome from medical treatment and a shift to surgical treatment.