This book gives a broad treatment of the subject which will include: the optics, science, and physics needed to understand the technology; a description of applications with a critical look at how the technology will successfully address actual clinical need; and, a discussion of delivery of OCT to the patient, FDA approval and comparisons with available competing technologies. The required mathematical rigor will be present where needed but be presented in such a way that it will not prevent non-scientists and non-engineers from gaining a basic understanding of OCT and the applications as well as the issues of bringing the technology to the market. "Optical Coherence Tomography" is a new medical high-resolution imaging technology which offers distinct advantages over current medical imaging technologies and is attracting a large number of researchers. It provides non-scientists and non-engineers basic understanding of Optical Coherence Tomography applications and issues.