[Retinal findings in thalassemia (author's transl)].

Two patients had neovascularizations, bleeding and enclosed vessels or pigmented foci on the retina. The analysis of the hemoglobin showed a raised HbA2 fraction, indicating that they could be considered heterozygous gene carriers of beta-thalassemia. An electrophoretic-spectrophotometric method of determining the hematologic changes is described by means of which thalassemia minima can be diagnosed reliably.