2026-2027 Basic and Clinical Science Course, Section 8: External Disease and Cornea

Section 8 of the Academy's Basic and Clinical Science Course™ (BCSC®) begins with a review of the structure and function of the external eye and cornea, followed by a chapter on relevant examination techniques and devices.The book covers various topics, including ocular surface disease and therapeutic interventions, degenerations and depositions, congenital anomalies, corneal dystrophies, infectious diseases, immune-mediated diseases, and neoplastic disorders.Toxic and traumatic injuries of the anterior segment and corneal transplantation are also discussed. For BCSC Section 8’s major revision, content was reorganized for improved readability, such as the chapter on degenerations and depositions of the conjunctiva, cornea, and sclera. “Key Points” is a new feature that identifies important information throughout the text, and “Clinical Pearls” present information that has a direct impact on the diagnosis and management of corneal disease.Section 8 has 58 videos, 15 of which are new and