[Thrombotic thrombocytopenic purpura (Moschcowitz's disease)].

Background: TTP is a rare haematological disease consisting of thrombocytopenia, haemolytic anaemia, fever, neurological symptoms and renal failure.

Patient: A 63-year-old female patient presented to our clinic with bilateral progressive loss of visual acuity accompanied by metamorphopsia. Ophthalmoscopy revealed pigmentepithelial choroidal atrophy secondary to the occlusion of chorioidal vessels and disseminated intraretinal and diffuse vitreal haemorrhage.