Fernando José Macouzet-Romero, Gabriel Antonio Ochoa-Máynez, Olivia Pérez-García, Beatriz Jatziri Pérez-Aragón and Virgilio Lima-Gómez*

Retina Department, Sala Uno Ophthalmology Clinic, Mexico

*Corresponding Author: Virgilio Lima-Gómez, Retina Department, Sala Uno Ophthalmology Clinic, Mexico.

Received: May 23, 2021; Published: August 13, 2021

Abstract

Introduction: Arterial hypertension decreases vessel and perfusion density, measured with optical coherence tomography angiography, in people without retinopathy. The contribution of parafoveal capillaries to foveal perfusion might change before capillary densities decrease and could be measured with a coefficient of determination.

Materials and Methods: Non-experimental, prospective, comparative cross-sectional study in people with and without arterial hypertension, that compared vessel and perfusion densities in the superficial parafoveal capillary plexus with a 3 x 3 optical coherence tomography angiography (Cirrus 6000 with Angio Plex) between groups (Mann-Whitney’s U. Coefficients of determination were calculated to learn the contribution of vessel density to perfusion density in each group.

Results: 15 eyes in each group, there were no differences in age, or any of the vessel and perfusion densities between groups. The coefficients of determination were lower in people with arterial hypertension and reached up to 15 percentage points in the superior and temporal fields; these changes show a reactive dilatation of vessels larger than capillaries.

Conclusion: The contribution of capillaries to perifoveal perfusion, measured with a coefficient of determination, decreased before vessel density in people with arterial hypertension.

Keywords: Angio OCT; Arterial Hypertension; Coefficient of Determination; Perfusion Density; Vessel Density

References

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Citation

Citation: Virgilio Lima-Gómez., et al. “Reduced Contribution of Capillaries to Parafoveal Perfusion Before Changes of Vessel Density in Arterial Hypertension".Acta Scientific Ophthalmology 4.9 (2021): 22-25.

Copyright

Copyright: © 2021 Virgilio Lima-Gómez., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.