Surely it must be something of a record in ophthalmology, perhaps in all of medicine, for a book to be in its tenth edition and showing no sign of age or senescence in its content. As compared with its immediate predecessor, the ninth edition, it has 2 new editors and 55 contributors, 51 of whom are new. They are drawn from an eclectic array of 23 academic, public, and private institutions, and 6 countries are represented among its contributors. This diversity almost guarantees extensive revision of the text. A new organizational plan reinforces the reader's sense that the text is a serious updating of our current knowledge, as compared with the information in the previous edition, which was published in 1992. Indeed it is. This is no simple rehashing of almost out-of-date material dressed up to entice the reader into purchasing the text. We would expect no less from its distinguished editors and contributors.