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Introduction: Toxoplasmosis is a worldwide disease; it can cause decreased vision or even blindness. The route of transmission in humans may vary according to the habits of the region; probably the ingestion of raw or undercooked meat is the main source of infection., Objective: To determine the seroprevalence of toxoplasmosis in an eye clinic, the frequency of ocular toxoplasmosis (OT) and risk habits for acquiring the infection., Materials and Methods: Adult patients consulting in the Retina Department of the Teaching Hospital of the National University of Asuncion, Paraguay between August and September, 2014 were included. Prior informed consent, socio-demographic and epidemiological data related to T. gondii infection were obtained. In addition a blood sample for the determination of anti T. gondii IgG antibodies by the ELISA method was taken and ophthalmologic evaluation for the diagnosis of OT was made., Results: A total of 80 patients with mean ± SD age of 53 ± 20 years were studied, with slight predominance of women (55%). The seroprevalence of toxoplasmosis was 84% (67/80) and OT was detected in 8.9% of the 67 seropositive persons. The habit of not washing vegetables with sodium hypochlorite and eat meat from wild animals was related to higher risk of infection in this population., Conclusion: It is important to conduct research at the population level to establish the epidemiology of toxoplasmosis in our country. Information on prophylactic measures to prevent infection by T. gondii should be given to the population.