Armarnik S, et al. - Researchers sought to describe how various types of deeply embedded corneal foreign bodies findings are demonstrated by anterior segment spectral domain optical coherence tomography (AS-OCT). In this experimental study, they deeply embedded seven different foreign bodies (consisting of five different materials: glass, plastic, metal, wood, and pencil graphite) in the cornea an ex vivo model of calf eyes. In AS-OCT, unique presentation of various materials was noted. Hyper-reflective anterior border, whereas no clear identification of the posterior border due to the shadowing effect, were demonstrated for The opaque materials (pencil graphite, metals, and wood). Moreover, both pencil graphite and metals had a chain of signals though metals uniquely exhibited a “mirroring effect”. As an opaque material, wood looks as a hyper-reflective mass with a spectrum of penetrability depending on the degree of concentration. When surrounded by air or fluid, transparent materials demonstrated hyper-reflective sharp borders. This is in contrast to that when these materials were embedded purely in the corneal stroma.