DiBernardo (ultrasonography, Johns Hopkins U.) and echography practitioner Greenberg note that the technique of ophthalmic ultrasound, although an important new tool in tissue evaluation and such conditions as thyroid eye disease and diagnosis of an orbital mass, is extremely operator-dependent. They cover techniques for diagnosing diseases of the retina, choroid, vitreous, anterior segment, optic nerve, and extraocular muscles along with assessment of intraocular tumors. Along with over 550 images, which includes an expanded collection of anterior segment images, they include three-dimensional schematics demonstrating the sound beam and probe positions on the eye and link images closely with diagnosis techniques. They have also update the extensive list of references. The authors have updated this edition extensively in technology and practice and to include new images and expanded coverage of orbital evaluations. Annotation ©2007 Book News, Inc., Portland, OR (booknews.com)