Optical Devices in Ophthalmology and Optometry is a highly recommended textbook that explains the physical principles of optics, photonics, metrology, and lasers, and proceeds with the design principles and instrument construction of medical devices that are most often used in diagnosis and treatment. The textbook is based on the lectures that two of the authors taught to graduate students with backgrounds in physics, electrical, and mechanical engineering. The author’s aim in their courses is to bridge the physics and engineering with the development of medical devices for ophthalmology and optometry. But this textbook’s intended audience consists of engineers and physicists who work in academic or industrial research. Together the authors built upon their expertise in optics, medical technology, laser development and laser applications in medicine, and medical devices to produce a comprehensive textbook that is physically rigorous, clearly written, well illustrated with clear, colored figures, and enhanced by extensive footnotes, problem sets, critical references, a summary of all the used mathematical variables and abbreviations, and an index.