This third volume of "Uveitis and Immunological Disorders" in "Essentials in Ophthalmology" provides up-to-date, relevant information for the reader. Our knowledge and understanding of immune mechanisms has increased exponentially over the past few years and has expanded to disorders such as diabetic retinopathy and macular degeneration. This volume will provide the ophthalmologist with practical information on how to diagnose and treat these difficult, and in some cases, blinding disorders. In addition, there are important discussions of the mechanisms underlying these conditions, which incorporate the most recent, up-to-date research material available. 'Summary for the Clinician' and 'Core Messages' sections enhance the value of each chapter. This volume was written by authors who are leaders in their field. Important and provocative questions dealing with recent developments are raised. Topics covered include: To do or not to do? HLA typing in keratoplasty; Acute anterior uveitis and HLA-B27: what is new? Keratouveitis: new aspects on diagnosis and management; Steroid sensitivity in uveitis; Is Behcet's retinal vasculitis different from idiopathic retinal vasculitis? Is the diagnosis important in sight-threatening non-infectious uveitis? Uveitis and multiple sclerosis: is there a real link? Inflammation and AMD: what is the evidence? Diabetic retinopathy: an inflammatory disorder? and, Pathophysiology and its consequences.This highly practical and clinically relevant volume is valuable to all those involved in the handling and treatment of patients with ocular inflammation. In addition, it provides fresh perspectives and insights into our current understanding of common disorders such as diabetic retinopathy and macular degeneration.