The Eye, Volume Four, the latest release in the Stem Cell Innovation in Health and Disease series, addresses the recent data accumulated on the potential applications of stem cells to treat eye diseases. This volume highlights the recent development of cutting-edge in vitro and in vivo research tools and approaches, including human and murine organoid cultures, genetic editing in vitro and in vivo, human iPSC models of disease, haploid cells for genetic as well as compound screening paradigms, genetically engineered mice, and stem cell transplantation to cure eye diseases. The volume is written for researchers and scientists in stem cell therapy, cell biology, regenerative medicine and organ transplantation, and is contributed by world-renowned authors in the field. This is a timely and fascinating collection of information and new discoveries that provides a contemporary snapshot album on the fast-moving field of regenerative medicine and stem cell therapeutics.