Roy, an ophthalmologist in private practice who specializes in cataract surgery, provides students, research fellows, optometrists, ophthalmologists, and eye care practitioners with a guide listing the differential diagnosis of specific ocular diseases, organized by anatomic organ--the orbit, lids, lacrimal system, extraocular muscles, conjunctiva, globe, sclera, cornea, anterior chamber, pupil, iris, lens, vitreous, retina, choroid, and optic nerve--in addition to visual field defects and intraocular pressure and ending with a section on general signs and symptoms such as visual disturbance or complaint and head position. Annotation ©2012 Book News, Inc., Portland, OR (booknews.com)