[en] The level is assessed of cellular autoreactivity against retinal antigens in patients with detachment of the retina. A test was selected which can record the first stage of the immunological response, i.e., the bond of sensitized lymphocytes with antigen (mixture of antigens in the form of crude extract), in this case with antigen from the human chorioretina. Two modifications of the test were used: the bond of ¹²⁵I-labelled extract from the human chorioretina with isolated lymphocytes, and the bond of the same extract with lymphocytes of whole blood. Using the first modification, a total of 17 patients with detachment of the retina and 17 controls were examined. Usxng the second modification, 15 patients with detachment of the retina and 15 controls were examined. From the results of the test ensued that lymphocytes of patients with detachment of the retina do not differ from lymphocytes of controls in the capacity to bind ¹²⁵I-labelled extract from the human chorioretina. The method is described in detail. (author)