An OCT scanner uses an infrared laser to detect the reflections from the different layers in the retina. By measuring at each point by point the depth of the reflections it is possible to build a map of the different layers in the retina. To analyze the data one usually scrolls through the cross-sections to detect any changes in the thickness of the different layers. This is perfect to quantify and monitor the progression of different retinal diseases but is complicated and tedious. Furthermore, the area that can be measured in one scan is limited (FOV=10⁰-30⁰), this makes an OCT less suited for quick screening.
The EasyScan also uses an infrared laser to image the lower layers of the retina (all the way to the RPE) but presents the results in a large (>45⁰) easy to interpret and explain 2D image. This is ideal for quickly and easily detecting retinal changes.