Review of Optical Coherence Tomography Angiography Uses, Advantages, and Potentials

Abstract

SUMMARY O CTA is a new technology that has great potential for use in the clinical setting. Compared with FA and ICGA, the current retinal angiographic gold standards. OCTA advantages: That it is non-invasive, acquires volumetric scans that can be segmented to specific depths, uses motion contrast instead of intravenous dye, can be obtained within seconds, provides accurate size and localization information, visualizes both the retinal and choroidal vasculature, and shows structural and blood flow information in tandem. OCTA has been shown to be a useful imaging modality for the evaluation of common ophthalmologic diseases; Such AMD, diabetic retinopathy, artery and vein occlusions, and glaucoma. In some cases OCTA has even been shown to detect pathology not seen on FA. In the future, faster scanning speeds would be crucial to obtain larger fields of view with higher resolution. More studies are needed to determine OCTA’s utility in the clinical setting and to determine if this technology may offer a noninvasive option of visualizing the retinal vasculature in detail.