The broad field of neuro-ophthalmology encompasses lesions of both the afferent and efferent pathways, which can result from various etiologies: tumoral, paraneoplastic, vascular, inflammatory, infectious, or hereditary, just to name a few. This volume of Essentials in Ophthalmology is dedicated to the review of new developments in neuro-ophthalmology, including those in diagnosis, physiology, investigations or therapeutic options. It is divided into six parts, designed to provide the clinician with a summary of some of the newest data regarding: Diseases of the optic nerve, unusual retinopathies, new methods of investigations of the retina, optic nerve, and visual brain, neuro-ophthalmic implications of some systemic disorders, oculomotility, visual rehabilitation. This up-to-date, concise, and practical book will help the clinician understand the unusual diseases of certain patients with neuro-ophthalmic disorders.