foveal avascular zone

{{Short description|Region of the retina of the eye}}

The foveal avascular zone (FAZ) is a region within the fovea centralis at the centre of the retina of the human eye that is devoid of retinal blood vessels. The geometric centre of the FAZ is often taken to be the centre of the macula and thus the point of fixation.{{cite book |last1=Bille |first1=Josef F. |title=High Resolution Imaging in Microscopy and Ophthalmology: New Frontiers in Biomedical Optics |date=2019 |publisher=Springer |isbn=978-3-030-16638-0 |url=https://books.google.com/books?id=9yCpDwAAQBAJ&q=Foveal+avascular+zone |language=en}}

The FAZ is an important anatomical landmark in fluorescein angiography. Its diameter is 0.5mm, the central 1.5 degrees of an individual's visual field.{{cite book|title=Basic and Clinical Science Course Complete Set 2012-2013|url=https://books.google.com/books?id=zMpmLwEACAAJ|publisher=American Academy of Ophthalmology|year=2012|isbn = 9781615253203}}{{page needed|date=June 2017}}