Clinical Optics and Refraction contains 313 multiple choice questions and short answers mostly referenced by current versions of the Basic and Clinical Science Course (BCSC) book series by the American Academy of Ophthalmology (AAO) in testing the current knowledge of the residents in optics and refraction. The book's clinical slant makes optics relevant to clinical practice and the answers reinforce the imperative points. The book's target audience are those planning to sit for different styles of postgraduate exams; from the American Board of Ophthalmology examinations or the OKAP, the British style examinations such as the MRCS and FRCS examinations as well as various formats of ICO assessments up to the final stage, FICO.