Abstract: A growing body of evidences have revealed the role of vascular dysfunction in the pathogenesis and progression of glaucoma. As a fast noninvasive blood vessels imaging technology, optical coherence tomography angiography (OCTA) realizes the stratified imaging of the retinal and choroid microcirculation in each layer of tomography, provides a quantitative assessment of vessel density and blood flow index, and therefore is able to complement the deficiency of conventional optical coherence tomography (OCT) in providing direct flow information. OCTA seems to be very helpful in early diagnosis of glaucoma and accurately monitoring the progress of glaucoma. Its application on the clinical diagnosis and follow\|up of glaucoma is promising.

Key words: glaucoma, optical coherence tomography angiography, vessel density