Since its introduction in the clinical arena, optical coherence tomography (OCT) has been welcomed as a technological breakthrough in coronary imaging. Intravascular ultrasound (IVUS) paved the way over 30 years ago, providing a new angle of view of coronary anatomy and percutaneous coronary interventions (PCIs). OCT further added to the study of coronary anatomy thanks to a resolution 10 times higher than that of IVUS. At first, interventional cardiologists were stunned by the content of OCT images, as many imaging details were hardly interpreted and handled. It took years for operators to gain a deeper understanding of images. There is still some debate going on regarding how to react to OCT findings, despite published consensus documents that set interpreting rules [1] .