Open AccessOptical Coherence Tomography Angiography and Glaucoma: A Brief Review
Author(s) -
Sasan Moghimi,
Huiyuan Hou,
Harsha L. Rao,
Robert N. Weinreb
Publication year - 2019
Publication title -
asia-pacific journal of ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.163
H-Index - 20
ISSN - 2162-0989
DOI - 10.22608/apo.201914
Subject(s) - glaucoma , optical coherence tomography , medicine , optical coherence tomography angiography , ophthalmology , optic nerve , angiography , tomography , intraocular pressure , optometry , radiology
Optical coherence tomography angiography (OCTA) is a new modality in ocular imaging which provides non-invasive assessment and measurement of the vascular structures in the retina and optic nerve head. This technique provides useful information in glaucoma, such as quantitative assessment of vessel density. Vessel density measurement can be affected by various subject-related, eye-related, and disease-related factors. Overall, OCTA has good repeatability and reproducibility, and can differentiate glaucoma eyes from normal eyes. It can also help detect early glaucoma, reach a floor effect at a more advanced disease stage than optical coherence tomography (OCT), and adds information about glaucoma patients at risk of progression. Although it has higher variability than OCT, it also promises to be useful for monitoring glaucoma by detecting progression throughout the glaucoma continuum.