SD-OCT Angiography

OCT-A allows noninvasive, high-resolution imaging of the microvasculature of the retina and choroid, without intravenous dye administration. SD-OCT units use the light source used in commercially available and FDA-cleared OCT units on a modified platform. Optovue, Inc. has developed a customized SD-OCT system that implements a novel algorithm, the amplitude-based method of split-spectrum amplitude-decorrelation angiography (SSADA) for OCT-A. This detects motion in the blood vessel lumen by measuring the variation in reflected OCT signal amplitude between consecutive cross-sectional scans. Optovue has integrated the novel SSADA algorithm into their commercially approved RTVue SD-OCT unit for their OCT-A unit, the AngioVue. This unit is being conducted under an abbreviated IDE.