The repeatability of superficial retinal vessel density measurements in eyes with long axial length using optical coherence tomography angiography.

ABSTRACT:

Background

To investigate the repeatability of superficial retinal vessel density measurements in healthy eyes with long axial length (AL) using optical coherence tomography angiography (OCTA).

Methods

There were 60 eyes of 31 volunteers enrolled in this cross-sectional observational study. All subjects underwent OCTA, AL and refraction test. The enrolled eyes were divided into the long AL group (26 mm ≤ AL < 28 mm) and normal AL group (22 mm ≤ AL < 26 mm). The vessel length density (VLD), perfusion density (PD), and fovea avascular zone (FAZ) of the superficial retinal vessel were evaluated. Repeatability was assessed by intraclass correlation coefficients (ICCs) and Bland-Altman analysis. Pearson's r correlation was used to analyze the relation of AL and the absolute diffe

SUBMITTER: Li M 

PROVIDER: S-EPMC6297956 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature