Keep your ophthalmic knowledge current with the Academy's 2017-2018 Basic and Clinical Science Course (BCSC). BCSC is the most extensive compilation of ophthalmic scientific research and clinical experience, and it is continually updated by a faculty of more than 80 expert ophthalmologists. Section 5 has been fully updated for the 2017-2018 edition. It presents a symptom-driven approach to the diagnosis and treatment of major neuro-ophthalmic conditions. It leads the reader through the sometimes subtle manifestations of neuro-ophthalmic disease to anatomical localisation of lesions and definitive diagnosis. Section 5 now includes five videos that can be viewed by scanning the QR code included in the book.