Diurnal Variation of Retinal Vessel Density in Healthy Human Eyes.

ABSTRACT:

Precis

A small increase in optic nerve head vessel density (VD), but not macular VD, in the evening compared with the morning is observed in healthy subjects.

Purpose

To evaluate the diurnal variation of the macular and optic nerve head (ONH) VD in healthy eyes as measured with optical coherence tomography angiography (OCT-A).

Methods

In this prospective study of healthy individuals older than 18 years old, VD parameters, including macular whole image vessel density, parafoveal vessel density, ONH whole image vessel density, ONH whole image capillary density, circumpapillary vessel density (cpVD), and circumpapillary capillary density, were measured with OCT-A at 4 time points throughout the day (8 am, 12 pm, 4 pm, and 8 pm).

Results

Twenty-nine healthy eyes we

SUBMITTER: Wu JH 

PROVIDER: S-EPMC8405550 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature