The aim of this book is to provide guidance to ophthalmic professionals on the diagnosis and management of ocular motility disorders. It presents the reader with key information grounded in clinical practice. For this fourth edition, all chapters have been comprehensively revised and updated and a new chapter has been added on 'Congenital Disorders of Innervation'. In addition the page design and layout have been significantly improved with full colour introduced throughout as well as many more clinical photographs, diagrams and flow charts.