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. // Contains 13 technical videos. Access the videos via QR codes. // Upon completion of Section 11, readers should be able to: *Identify congenital anomalies of the lens; *List types of congenital and acquired cataracts; *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. // Last major revision: 2016-2017 // About the BCSC: The Academy's Basic and Clinical Science CourseTM is ophthalmology s definitive source of clinical information. Practicing ophthalmologists and residents worldwide use the BCSC® to ensure the highest-quality patient care. Stay current with the ophthalmic reference that is vetted by 100+ ophthalmologists every year. // Each of the 13 volumes includes up-to-date clinical knowledge, concise information and tables, self-assessment questions with answers, photos and illustrations and opportunities for earning AMA PRA Category 1 CreditTM. // Beginning with the 2013 2014 edition, the Academy and the European Board of Ophthalmology (EBO) have partnered to make the BCSC the standard text for all European ophthalmology training programs. The EBO now recommends the BCSC as the primary educational resource for European trainees and ophthalmologists studying for the annual EBO Diploma Exam. // CME Information: The American Academy of Ophthalmology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians. // The American Academy of Ophthalmology designates this enduring material for a maximum of 10 AMA PRA Category 1 CreditsTM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.