A fantastic textbook that covers, well, the basics of vision. Learning about the structure of the eye, how we believe perception works, and different testing methodologies, can all be incredibly dry material. Thankfully, the authors of this book have made the subject matter digestible by weaving in a healthy dose of humor into the text. There was one line that felt like a personal attack (I read the line "If you lead a sad and uninteresting life, you may have this book as bedtime reading" as I was using the book as bedtime reading...), but one quickly learns that no-one is safe from the dry humor of the authors, as there are plenty of jokes made at the expense of various professions, patients with brain damage, and even the authors themselves. It's all tongue-in-cheek, however, and makes for an enjoyable and educational read.
Thinking back, I believe this book was an optional supplemental reading in my Mammalian Vision course during my undergrad many years ago, and I kind of wish that it was used as the primary text instead of whatever we actually ended up using. Maybe I'd have scored better than a B...