ABSTRACT
This review is devoted to the English- and Russian-language terminology of quantitative metrics that are used in the evaluation of images obtained by optical coherence tomography angiography (OCT-A). The paper presents an analysis of the use of terms characterizing intraretinal blood flow (vascular density, perfusion density, skeletonized density, etc.), area and shape of the foveal avascular zone, and choriocapillaris blood flow. The factors causing the heterogeneity of OCT-A terminology are described, including the lack of a unified international nomenclature for OCT-A, features of their Russian translation, inconsistency of the parameters in optical coherence tomography systems of different manufacturers. The article also considers ways to standardize the terminology.
Subject(s)
Retinal Vessels , Tomography, Optical Coherence , Tomography, Optical Coherence/methods , Humans , Retinal Vessels/diagnostic imaging , Terminology as Topic , Retinal Diseases/diagnostic imaging , Retinal Diseases/diagnosis , Fluorescein Angiography/methods , Choroid/blood supply , Choroid/diagnostic imagingABSTRACT
The article reviews the evolution of visual acuity assessment and gives comparison of the visual acuity charts (Snellen vs. ETDRS) widely used in research and clinical practice.
Subject(s)
Vision Tests , Visual Acuity , Reproducibility of ResultsABSTRACT
Activation of the sympathetic nervous system aggravates the course of myocardial infarction. Semax peptide moderated the degree of this activation and prevented the increase in the density of sympathetic endings in rat caudal artery in 28 days after ischemia or ischemia/reperfusion. The peptide reduced the density of α-adrenoreceptors in the caudal artery of rats with myocardial infarction. Semax produced no effect on ß-adrenoreceptors in both experimental models. The experiments on isolated segments of the caudal artery revealed reduced vascular responsiveness to electrical stimulation and norepinephrine infusion in rats treated with Semax after ischemia/reperfusion injury.
