Bilateral Cochlear Implants (CIs) offer great benefits to patients suffering from lack of hearing by improving speech understanding as well as by providing a sense of directionality. Software and hardware synchronization issues of binaural processing have limited all the benefits that could be offered by bilateral CIs. This book provides discussions on topics that include a generalized speech enhancement framework for bilateral cochlear implants using a single processor; long-term results of CIs; minimally invasive cochlear implantation; quality of life in adult CI recipients; and the evolution of the indications for CI and new frontiers.