“…Although the 24-hour blood pressure (BP) outline of NTG patients has been investigated, documenting nocturnal fluctuations greater than those recorded both in normal and POAG populations [28,33,44], a PubMed-database search highlights the lack of any trial concomitantly verifying the circadian trends of IOP and BP in Caucasian NTG patients. In fact, the existing literature exclusively concerns Japanese NTG clusters [19,22,23,29,43], even if emerging data strongly support the presence of remarkable racial variability with regard to several aspects of open-angle glaucoma care, mainly concerning the differential diagnosis, related to genotypic or phenotypic peculiarities [1,16,37], and the diverse therapeutic responses to anti-glaucoma drugs [21,24,39].…”