Optical coherence tomography (OCT) is a noninvasive objective ocular imaging technology providing cross-sectional images of the in vivo tissues at a micrometer resolution scale. Optical coherence tomography (OCT) was first reported of its use in ophthalmology by Puliafito and Fujimoto in 1991. Since its advent, it is one of the most useful devices in ophthalmic clinical practice. Over years, the clinical applications of OCT have improved dramatically in precision and specificity. As the resolution of OCT has been getting more and more refined and sophisticated specially with spatially encoded spectral domain OCT, intraoperative Fourier domain OCT, swept OCT, confocal or full-field OCT and TD-OCT, the identification, detection, localization and quantification of tissues has become more reliable and superior. OCT has now wider applications both in anterior and posterior segments diagnostics and intraoperative providing outcomes for the eye surgeons.   The present comprehensive book on OCT has been planned and prepared to cover all current and futuristic applications of OCT in ophthalmology. The 31 chapters of this book cover more anterior and posterior segments indication of OCT including cataract and refractive surgery, phakic lens, glaucoma, oculoplasty, corneal conditions, keratoplasty, neuro-ophthalmology and retinal disorders. International experts of the field and shared their experiences in form of chapters in this book nicely. The special attraction of the book is interactive video DVD showing intraoperative use of OCT with various clinical conditions not available elsewhere.