OPTICAL COHERENCE TOMOGRAPHY IN ANGIOGRAPHY MODE IN THE DIAGNOSIS OF MACULAR EDEMA DUE TO THE BRANCH RETINAL VEIN OCCLUSION

Abstract

Purpose: to determine the informative value of OCT-A in the diagnosis of patients with branch retinal vein occlusion (BRVO)complicated by macular edema (MO).Material and methods. In the main group 29 patients were examined with a diagnosis of BRVO with MO; in the control group30 patients without ophthalmic pathology were examined. We analyzed and described the qualitative and quantitative changes that were detected using OCT and OCT-A.Results. The mean central retinal thickness in the fovea in the main group was 523.2±113.6 μm, in the control group - 246±19μm. In the main group the central thickness of the choroid was 259.2±7.4 µm, in the control group - 236.7±8.3 µm. The density of capillaries in the superficial and deep capillary plexus was evaluated in 5 areas. In the main group, the area of the foveal avascular zone (FAZ) was 0.39±0.05 mm2, in the control group the FAZ area was 0.36±0.08 mm2.Conclusion. OCT-A allows detecting changes in FAZ, capillary nonperfusion zones, microvascular anomalies and signs of vascular insufficiency, both in the superficial and deep capillary plexus.