Optical coherence tomography (OCT) is a non- invasive technique where a near-infrared laser beam penetrates a sample
and through the analysis of its scattered light information about the internal structure of the sample is calculated.
Although OCT is mainly used in medicine its application to areas of enginery has been increased recently. Important
features of recent OCT systems allow us to determine accurately volumetric structure not only slices. In this works we
report such volumetric analysis applied to the study of scratches and damages in optical elements in order to quantify not
only the scratch sizes but also its depths. This study is compared with an Schlieren technique. Experimental results are
presented. The finding reveals clearly the faults locations which may be an attractive results for the optical work shop
and the application of norms.