Major Revision Reviews the anatomy, physiology, embryology and pathology of the lens. Covers the epidemiology, evaluation and management of cataracts and gives an overview of lens and cataract surgery, including special situations. Walks the reader through making an appropriate differential diagnosis and designing a management plan for intraoperative and postoperative complications of cataract surgery. Now includes key takeaways highlighted at the beginning every chapter, 30 detailed illustrations and two animations on embryology and biochemistry and physiology. Contains 13 technical videos. Upon completion of Section 11, readers should be able to: - Describe the normal anatomy, embryologic development, physiology, and biochemistry of the crystalline lens - Identify congenital anomalies of the lens - Describe the association of cataracts with aging, trauma, medications, and systemic and ocular diseases - Describe the evaluation and management of patients with cataract and other lens abnormalities - State the principles of cataract surgery techniques and associated surgical technology - Describe an appropriate differential diagnosis and management plan for intraoperative and postoperative complications of cataract surgery treatment plans