Modern System of Ophthalmology (MSO) is a series of multiple volumes, planned with a very specific aim to cater to the needs of residents in ophthalmology. Volume editors of this series make a team of like-minded and devoted teachers from different subspecialities. Anatomy and Physiology of Eye, a volume of MSO series, in its third edition, presents an updated and thoroughly revised, uniquely integrated text on anatomy and physiology of eye. It includes complete and upto- date material in a simple language and lucid style. It has been primarily written for postgraduates in ophthalmology. However, it is hoped, this book will prove useful for postgraduates from the disciplines of anatomy and physiology, and students of optometry as well.