This is a practical manual for diagnostic testing, focusing on the historical and contemporary research on functional disorders in general, and functional visual disorders in particular. Functional Ophthalmic Disorders: Ocular Malingering and Visual Hysteria is a how-to manual that is written for the practicing ophthalmologist and optometrist, complete with color photos that allow the reader to see pictures of select diseases. In addition to the photos, videos are provided online to illustrate the various tests and possible results conducted on a mock patient to assist in the differential diagnosis. Written and edited by leaders in the field, some of the topics covered include history of functional disorders, ophthalmologic examination in malingering and techniques and tests for functional and simulated defects.