https://www.selleckchem.com/pr....oducts/dl-alanine.ht
A small increase in optic nerve head vessel density (VD), but not macular VD, in the evening compared to the morning is observed in healthy subjects. To evaluate the diurnal variation of the macular and optic nerve head (ONH) vessel density (VD) in healthy eyes as measured with optical coherence tomography angiography (OCT-A). In this prospective study of healthy individuals older than 18 years old, VD parameters, including macular whole image vessel density (wiVD), parafoveal vessel density (pfVD), ONH whole image vessel density (ON