This text discusses the anatomic basis for visual field defects, reviews the methods for testing problems in the visual fields and gives guidelines for interpretation. It provides a foundation of visual fields including description, common terminology and anatomy. The authors emphasize how lesions within the visual pathways give rise to visual field defects. This book also outlines the methods of testing, from basic to advanced, and emphazises efficiency in testing areas in a number of clinical settings. It includes an atlas of common visual field defects due to glaucoma, neurological disease and other medical conditions.