In real time, optical coherence tomography (OCT) provides high-resolution cross-sectional images of the macula very similar to those obtained by in vivo histopathological sections. OCT represents a major advance in the diagnostics of retinal disease and has found rapid acceptance among retinal specialists worldwide. OCT is not a substitute for a thorough clinical examination, fundus imaging or various angiographic techniques, but a superb adjunctive tool for probing the mysteries of retinal disease. Throughout this highly-illustrated text of both normal and diseased appearances, OCT images...