The aim of this book is to focus on Small Incision Lenticule Extraction (SMILE). SMILE has recently received Food and Drug Administration (FDA) approval in 2016, and is increasingly becoming the procedure of choice for the correction of myopia and myopic astigmatism. The world is currently in the transition phase, with surgeons shifting from Laser-Assisted In Situ Keratomileusis (LASIK) to SMILE. An in-depth understanding of the procedure, its outcomes, as well as the intraoperative challenges is essential before embarking on this new procedure. SMILE has a steep learning curve, and author provided a comprehensive review of the complications, as well as their management to ease the flap to cap transition. The text is interspersed with easy to understand, concise tables, self-explanatory diagrams, clinical pictures and anterior segment optical coherence tomography (ASOCT) images to recapitulate the salient points and enhance understanding. This book is useful to the refractive surgeons, as well as the training institutions and will be an invaluable asset for all refractive surgeons and serve as a one-point reference to provide day-to-day guidance.