Diabetic retinopathy (DR) is a serious disease of visual organ, which is one of the main causes of blindness and low vision, and refers to late microvascular complications of diabetes mellitus (DM). The study of pathogenesis at the molecular level, the development of methods for early diagnosis and treatment of DR is one of the urgent problems of ophthalmology. The special role of retinal pigment epithelium (RPE) and associated with it Bruch's membrane (BM) in maintaining retinal homeostasis, as well as the search for new effective approaches to treatment and prevention of progression of diabetic retinal damage, determines the high relevance of studying these structures in DR.

The aim of the work is to study changes in the retinal pigment epithelium according to optical coherence tomography (OCT) data in various types of diabetic retinopathies.