RESUMO
Accumulations of pathological amyloid protein in the vitreous can be a pathognomonic morphological sign of systemic amyloidosis, which is characterized by deposition of insoluble fibrillar protein aggregates (amyloid) in various organs and tissues. The article describes a clinical case of a female 65-year-old patient with bilateral vitreous floaters and histologically confirmed vitreous amyloidosis on the right eye. The patient had undergone YAG laser vitreolysis of the right eye 3 years ago on the Ultra Q Reflex system («Ellex¼, Australia) to treat an atypical Weiss ring. Diagnosis of vitreous amyloidosis was confirmed using the following equipment: video slit lamp SL9900 («CSO¼, Italy), optical coherence tomography system Solix («Optovue¼, USA), B-scan Plus («Accutome¼, USA), microscope CX41RF («Olympus Corporation¼, Japan). Due to significant visual deterioration in the right eye, the patient underwent vitrectomy. Microscopic examination of the surgical sample showed the presence of amyloid deposits revealed by the brick-red specific staining with congo red dye and apple-green birefringence of the stained areas in polarized light.
