excellent reference for an introduction to everything eye. the author shares extensively in a way that allows the reader to us the volume as a reference book (skipping to the chapter that most suits their needs) or cover to cover. Reading this book cover to cover will repeat certain concepts. But this makes sense because this book reads quite a bit like a textbook but truly appears to be written to be an easy reference book (well written indexes, bibliography, and other tidbits at the end). Certain paragraphs seemed a somewhat opinionated rather than absolute truths. But I like that in a book like this, gets one thinking about the topic and consulting oneself about their own take on the topic given the information available. The eye is such an environmentally sensitive thing (can't see without light but damage comes from too much light, completely subject to proper lubrication and pressure, et cetera) in ways this book shone a light on with excellent imagery both in word and picture.