What is it about?

In this review paper, we are going to describe the basic principles of OCT and OCTA, their advantages and disadvantages, and the basic hardware and software specifications of some of the commercially available OCTA devices. This is done in the most straightforward possible language to help health professionals without deep knowledge of optoelectronics

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Why is it important?

OCT was the fastest-adopted imaging technique in the history of ophthalmology and in 2010 the number of ophthalmic OCT scans was comparable to the number of MRI, SPECT, PET, and CT examinations. One relatively novel OCT imaging application is OCT angiography (OCTA), which was commercially introduced in 2014. OCTA utilizes the blood movement within the vasculature in order to construct an angiogram of the retina and the choroid. However, there are essential limitations and especially in absolute blood flow quantification. A detailed description of the pros and cons and specifications are presented in this work.


Writing this article was a great pleasure as it has co-authors with whom I have had good collaborations. In addition, as this work progressed, it became obvious that OCTA is an exciting new application that requires very careful analysis and interpretation of results.

Dr Aristotle G Koutsiaris
University of Thessaly

Read the Original

This page is a summary of: Optical Coherence Tomography Angiography (OCTA) of the eye: A review on basic principles, advantages, disadvantages and device specifications, Clinical Hemorheology and Microcirculation, April 2023, IOS Press,
DOI: 10.3233/ch-221634.
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