This book is just what we needed to gather the knowledge accumulated on Usher syndrome throughout the past fifteen years. The epidemiology and pathophysiology of the disease are discussed in several chapters. The great importance of an early diagnosis of the disease in affected children in order to provide them with appropriate education and therapeutic choices is suitably emphasised. Present therapeutic options as well as the ones under development, based on either physical, cellular, or genetic approaches are also presented. In this book, physicians, ophthalmologists, ENT specialists (Ear, Nose, and Throat specialists) will thus be able to extract information essential to their day-to-day medical practice, whereas scientists will find helpful notions to identify the fundamental issues that remain to be solved.