This book, designed for ophthalmologists and particularly for refractive surgeons, aims to develop practical and clinical skills in readers so that they are able to make the right decisions in managing keratoconus. There are four main chapters. The first is devoted to diagnosis and describes the clinical signs, the appearances on microscopy, and the significance of corneal hysteresis and corneal topography. Classifications and patterns of keratoconus are then presented, and the author offers his own new classification of topographic patterns. The third chapter addresses the management of the disease in detail. Both non-interventional and interventional approaches are discussed with due attention to contraindications and complications. In addition, a novel classification of management parameters is suggested, and a systematic approach to management, formulated. In the final chapter this approach is applied to nine cases that serve as clinical examples.