This book, through scientific knowledge, aims to present in an easy, concise and orderly manner the most frequent diseases and disorders of the posterior segment of the eye since some of them may cause alterations so severe that they can even lead to blindness.I trust that this book will make a better evaluation of this topic, making a more appropriate analysis with a large number of photos and images, which will help to have a better understanding of the problem.I have tried to follow some selection criteria with the pathologies that may be more frequent in the vitreoretinal speciality practice, so that this treaty is dynamic and flexible for all specialists and adapts in the best way in each pathological situation.This work takes its place as one of the most comprehensive yet readable books on the retina subjectand and its complications, is the best example I know to support the argument that the printed textbook is alive and well, and in great demand.With this brief introduction, I want to make this work available to you, hoping that it will be for all of us a means to improve the quality of specialized eye care, since our intention is to achieve the patient's well-being.