The vitreous humour is a clear gel positioned behind the iris (coloured part) and the lens, and in front of the retina (back of the eye). Vitrectomy is the surgical removal of the vitreous humour, a procedure needed to allow ophthalmic surgeons to diagnose and treat underlying disease in the eye. This new edition provides a step by step guide to vitrectomy surgeries. Beginning with a description of the anatomy and physiology, the role of optical coherence tomography and anaesthesia, the following chapters discuss vitrectomy procedures for different ocular diseases and disorders. Written by a recognised Spanish author and editor team, the second edition includes new chapters, more than 350 full colour images and illustrations, and a DVD demonstrating vitrectomy surgery.